Allen Pre Medical Test 21/10/2018 NEET Notes | EduRev

NEET : Allen Pre Medical Test 21/10/2018 NEET Notes | EduRev

 Page 1


Corporate Office : ???? ? CAREER INSTITUTE, “SANKALP”, CP-6, Indra Vihar, Kota (Rajasthan)-324005
 +91-744-2757575   dlp@allen.ac.in   www.dlp.allen.ac.in, dsat.allen.ac.in
1. A seat marked with Reg. No. will be allotted to each student. The student should ensure that he/she occupies the correct seat only.
If any student is found to have occupied the seat of another student, both the students shall be removed from the examination and
shall have to accept any other penalty imposed upon them.
??????? ??? ????? ? ??? ???? ???? ??? ?? ?? ??? ?? ????? ?????? ???? ? ?? ? ????? ?? ? ????? ???? ? ?????? ??? ??? ?? ??? ?? ???? ??? ??? ??? ????? ? ????? ?? ???? ??? ????? ? ??? ?????? ??
?? ??????? ???? ???????????????? ????? ????? ??? ?? ??????? ??? ??? ???? ?? ???? ????? ??????? ????????? ?? ??????????? ????? ??? ??????????? ?????????
2. Duration of Test is 3 Hours and Questions Paper Contains 180 Questions. The Max.  Marks are 720.
??????? ?????????3 ?????? ????? ???? ???? ?? ?? ??? ?180 ?? ?? ???? ???? ?????? ??? ??720 ? ?? ??
3. Student can not use log tables and calculators or any other material in the examination hall.
??? ????? ?? ??????? ??? ??? ?? ??????? ??? ????????????? ??????? ???? ??? ????? ?? ??????? ?? ?? ??????? ?? ?
4. Student must abide by the instructions issued during the examination, by the invigilators or the centre incharge.
??????? ??? ??????? ????? ?? ??? ???????? ?????? ?? ?????????? ??? ????????? ????? ???????????? ?? ?
5. Before attempting the question paper ensure that it contains all the pages and that no question is missing.
???? ?? ?? ???? ??????????????? ????? ??????? ??????? ?????? ???? ?????? ???? ??????? ?? ??????????? ?
6. Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer is harmful.
??????? ????????? ??? ??? ????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ????? ????? ??????? ???? ??????????? ?????? ????? ?
7. Use Blue or Black Ball Point Pen Only to completely darken the appropriate circle.
????????? ??? ??? ???? ?? ??? ?????? ?? ?????? ??? ????? ???????? ?????? ???? ??? ??????? ?????
8. If you want to attempt any question then circle should be properly darkened as shown below, otherwise leave blank.
???? ???? ????? ? ?? ?? ??? ? ??? ????? ??? ?????? ? ???? ?? ?? ???? ????? ???? ?? ??? ? ????? ?? ?????? ???? ?? ????? ?? ??? ??? ?? ????? ?? ????? ???? ?? ???? ?????? ??? ?
Correct Method ( ?????? ???) Wrong Method ( ?????????)
9. Please do not fold the Answer Sheet and do not make any stray marks on it.
?? ???? ????? ?? ?? ??? ??? ? ????? ?????? ???? ???? ?? ???????? ????? ??? ??? ??????? ??????
10. The candidate will not do any rough work on the Answer Sheet.
????????????????? ?? ?? ???????????? ???????? ??? ??? ??????????
11. CHANGING AN ANSWER IS NOT ALLOWED.
?? ?????????? ?? ?? ?? ?? ????? ?? ????
12. Use of Pencil is strictly prohibited
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ensure that your OMR Answer Sheet has been signed by the Invigilator and the candidate himself/ herself.
??? ??? ???????????OMR ?? ??????? ????? ?? ??? ????? ??? ?????????????????????? ???? ????? ???????? ???? ?
Your Target is to secure Good Rank in Pre-Medical 2019
Do not open this Test Booklet until you are asked to do so
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Important Instructions / ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Form Number :
DISTANCE LEARNING PROGRAMME
(Academic Session : 2018 - 2019)
TARGET : PRE-MEDICAL 2019
LEADER TEST SERIES / JOINT PACKAGE COURSE
Test Type : Unit Test Test # 08 Test Pattern 
:
 NEET-UG
TEST DATE 
:
 21 - 10 - 2018
*0 99 9 DM D3 10 31800 8*
Paper Code
(0999DMD310318008)
Page 2


Corporate Office : ???? ? CAREER INSTITUTE, “SANKALP”, CP-6, Indra Vihar, Kota (Rajasthan)-324005
 +91-744-2757575   dlp@allen.ac.in   www.dlp.allen.ac.in, dsat.allen.ac.in
1. A seat marked with Reg. No. will be allotted to each student. The student should ensure that he/she occupies the correct seat only.
If any student is found to have occupied the seat of another student, both the students shall be removed from the examination and
shall have to accept any other penalty imposed upon them.
??????? ??? ????? ? ??? ???? ???? ??? ?? ?? ??? ?? ????? ?????? ???? ? ?? ? ????? ?? ? ????? ???? ? ?????? ??? ??? ?? ??? ?? ???? ??? ??? ??? ????? ? ????? ?? ???? ??? ????? ? ??? ?????? ??
?? ??????? ???? ???????????????? ????? ????? ??? ?? ??????? ??? ??? ???? ?? ???? ????? ??????? ????????? ?? ??????????? ????? ??? ??????????? ?????????
2. Duration of Test is 3 Hours and Questions Paper Contains 180 Questions. The Max.  Marks are 720.
??????? ?????????3 ?????? ????? ???? ???? ?? ?? ??? ?180 ?? ?? ???? ???? ?????? ??? ??720 ? ?? ??
3. Student can not use log tables and calculators or any other material in the examination hall.
??? ????? ?? ??????? ??? ??? ?? ??????? ??? ????????????? ??????? ???? ??? ????? ?? ??????? ?? ?? ??????? ?? ?
4. Student must abide by the instructions issued during the examination, by the invigilators or the centre incharge.
??????? ??? ??????? ????? ?? ??? ???????? ?????? ?? ?????????? ??? ????????? ????? ???????????? ?? ?
5. Before attempting the question paper ensure that it contains all the pages and that no question is missing.
???? ?? ?? ???? ??????????????? ????? ??????? ??????? ?????? ???? ?????? ???? ??????? ?? ??????????? ?
6. Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer is harmful.
??????? ????????? ??? ??? ????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ????? ????? ??????? ???? ??????????? ?????? ????? ?
7. Use Blue or Black Ball Point Pen Only to completely darken the appropriate circle.
????????? ??? ??? ???? ?? ??? ?????? ?? ?????? ??? ????? ???????? ?????? ???? ??? ??????? ?????
8. If you want to attempt any question then circle should be properly darkened as shown below, otherwise leave blank.
???? ???? ????? ? ?? ?? ??? ? ??? ????? ??? ?????? ? ???? ?? ?? ???? ????? ???? ?? ??? ? ????? ?? ?????? ???? ?? ????? ?? ??? ??? ?? ????? ?? ????? ???? ?? ???? ?????? ??? ?
Correct Method ( ?????? ???) Wrong Method ( ?????????)
9. Please do not fold the Answer Sheet and do not make any stray marks on it.
?? ???? ????? ?? ?? ??? ??? ? ????? ?????? ???? ???? ?? ???????? ????? ??? ??? ??????? ??????
10. The candidate will not do any rough work on the Answer Sheet.
????????????????? ?? ?? ???????????? ???????? ??? ??? ??????????
11. CHANGING AN ANSWER IS NOT ALLOWED.
?? ?????????? ?? ?? ?? ?? ????? ?? ????
12. Use of Pencil is strictly prohibited
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ensure that your OMR Answer Sheet has been signed by the Invigilator and the candidate himself/ herself.
??? ??? ???????????OMR ?? ??????? ????? ?? ??? ????? ??? ?????????????????????? ???? ????? ???????? ???? ?
Your Target is to secure Good Rank in Pre-Medical 2019
Do not open this Test Booklet until you are asked to do so
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Important Instructions / ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Form Number :
DISTANCE LEARNING PROGRAMME
(Academic Session : 2018 - 2019)
TARGET : PRE-MEDICAL 2019
LEADER TEST SERIES / JOINT PACKAGE COURSE
Test Type : Unit Test Test # 08 Test Pattern 
:
 NEET-UG
TEST DATE 
:
 21 - 10 - 2018
*0 99 9 DM D3 10 31800 8*
Paper Code
(0999DMD310318008)
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 1/ 31
BEWARE OF NEGATIVE MARKING
HAVE CONTROL ? ? HAVE PATIENCE ? ? HAVE CONFIDENCE ? 100% SUCCESS
1. Maximum density of H
2
O is at temperature :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. The rods of length L
1
 and L
2
 are made of materials
whose coefficients of linear expansion are ?
1
 and
?
2
 respectively. If the difference between the two
length is independent of temperatures, then :-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. The coefficient of apparent expansion of liquid
when determined using two different vessels A &
B are ?
1
 & ?
2
 respectively. If the coefficient of
linear expansion of the vessel A is ?, then
coefficient of linear expansion of B :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. Water is used to cool radiators of engines in car
because :-
(1) of its lower density
(2) It is easily available
(3) It is cheap
(4) It has high specific heat
5. Heat required to melt 1gm of ice is 80 cal. A man
melts 60 gm of ice by chewing it in one minute,
his power is :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. The radiant energy from sun incident normally at
the surface of earth is 20 kcal/m
2
–min. What
would have been the radiant energy incident
normally on the earth if the sun had a temp. twice
of the present one ?
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
1. H
2
O ??? ?? ????? ? ?? ??? ? ?? ?? ???? ??? ? ???? :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. L
1
 ? L
2
 ??? ??? ? ????? ??? ? ???? ??? ??? ? ?? ?
1
 ?? ?
2
 ?? ?? ?? ? ??? ??
?? ??????????? ? ??????? ?? ?? ??????? ?? ???? ?? ? ????????? ?? ??? ?? ?? ?????
??? ?? ??? ???? ?????????? ?? ? ?? ????? ?? ? ????:-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. ? ? ? ? ?? ? ? ? ? ? ? ? ? ?? ? ? ?A ? B ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
???? ? ?????????? ?????? ? ?? ??? ???? ???? ?
1
 ? ?
2
 ??? ? ?? ???? ? ? ?? ?
?? ?? ?? ??A ?? ? ?? ? ??? ? ???? ?? ??????? ? ?? ? ??? ? ??? ?B ?? ? ? ? ????
????? ???? ??? ??? ???? :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. ?? ?? ? ??? ??????? ?? ???? ??? ?? ????? ??? ?? ?? ????? ??? ??? ???? ??? ??
???? ? ?? :-
(1) ???? ?? ??? ??? ??? ??
(2) ?????? ? ??? ???? ?? ??? ?? ?
(3) ? ??? ?? ? ????? ??
(4) ???? ? ??????? ? ?? ??? ???? ??? ??? ??
5. 1gm ?? ?? ?? ??????? ???? ? ????? 80 cal ???? ? ?????? ? ???
????? ?? ??60 gm ?? ?? ????1 minute ?? ?? ???? ???? ??? ?
??? ?? ? ? ?? ???? ? ??? ??? ?? :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. ?? ??? ?? ? ? ??? ?? ? ?? ???? ??? ?? ? ??? ? ?? ? ?? ?20 kcal/m
2
–min.
?? ??? ? ??? ????????? ?? ?? ????? ???? ???? ?? ?? ??? ?? ?? ?? ?? ???
?? ??? ?? ??? ???? ?? ???? ??? ??? ???? ?? ? ??? ???? ?? ? ???? ? ??? ??? ??
?? ??? ?? ???? ???? ??? ???? ?? ?? ?????
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
TOPIC : Thermal Physics (Thermal Expansion, Calorimetry, Heat transfer, K.T.G. & Thermodynamics,
Ray Optics & Optical Instrument
Page 3


Corporate Office : ???? ? CAREER INSTITUTE, “SANKALP”, CP-6, Indra Vihar, Kota (Rajasthan)-324005
 +91-744-2757575   dlp@allen.ac.in   www.dlp.allen.ac.in, dsat.allen.ac.in
1. A seat marked with Reg. No. will be allotted to each student. The student should ensure that he/she occupies the correct seat only.
If any student is found to have occupied the seat of another student, both the students shall be removed from the examination and
shall have to accept any other penalty imposed upon them.
??????? ??? ????? ? ??? ???? ???? ??? ?? ?? ??? ?? ????? ?????? ???? ? ?? ? ????? ?? ? ????? ???? ? ?????? ??? ??? ?? ??? ?? ???? ??? ??? ??? ????? ? ????? ?? ???? ??? ????? ? ??? ?????? ??
?? ??????? ???? ???????????????? ????? ????? ??? ?? ??????? ??? ??? ???? ?? ???? ????? ??????? ????????? ?? ??????????? ????? ??? ??????????? ?????????
2. Duration of Test is 3 Hours and Questions Paper Contains 180 Questions. The Max.  Marks are 720.
??????? ?????????3 ?????? ????? ???? ???? ?? ?? ??? ?180 ?? ?? ???? ???? ?????? ??? ??720 ? ?? ??
3. Student can not use log tables and calculators or any other material in the examination hall.
??? ????? ?? ??????? ??? ??? ?? ??????? ??? ????????????? ??????? ???? ??? ????? ?? ??????? ?? ?? ??????? ?? ?
4. Student must abide by the instructions issued during the examination, by the invigilators or the centre incharge.
??????? ??? ??????? ????? ?? ??? ???????? ?????? ?? ?????????? ??? ????????? ????? ???????????? ?? ?
5. Before attempting the question paper ensure that it contains all the pages and that no question is missing.
???? ?? ?? ???? ??????????????? ????? ??????? ??????? ?????? ???? ?????? ???? ??????? ?? ??????????? ?
6. Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer is harmful.
??????? ????????? ??? ??? ????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ????? ????? ??????? ???? ??????????? ?????? ????? ?
7. Use Blue or Black Ball Point Pen Only to completely darken the appropriate circle.
????????? ??? ??? ???? ?? ??? ?????? ?? ?????? ??? ????? ???????? ?????? ???? ??? ??????? ?????
8. If you want to attempt any question then circle should be properly darkened as shown below, otherwise leave blank.
???? ???? ????? ? ?? ?? ??? ? ??? ????? ??? ?????? ? ???? ?? ?? ???? ????? ???? ?? ??? ? ????? ?? ?????? ???? ?? ????? ?? ??? ??? ?? ????? ?? ????? ???? ?? ???? ?????? ??? ?
Correct Method ( ?????? ???) Wrong Method ( ?????????)
9. Please do not fold the Answer Sheet and do not make any stray marks on it.
?? ???? ????? ?? ?? ??? ??? ? ????? ?????? ???? ???? ?? ???????? ????? ??? ??? ??????? ??????
10. The candidate will not do any rough work on the Answer Sheet.
????????????????? ?? ?? ???????????? ???????? ??? ??? ??????????
11. CHANGING AN ANSWER IS NOT ALLOWED.
?? ?????????? ?? ?? ?? ?? ????? ?? ????
12. Use of Pencil is strictly prohibited
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ensure that your OMR Answer Sheet has been signed by the Invigilator and the candidate himself/ herself.
??? ??? ???????????OMR ?? ??????? ????? ?? ??? ????? ??? ?????????????????????? ???? ????? ???????? ???? ?
Your Target is to secure Good Rank in Pre-Medical 2019
Do not open this Test Booklet until you are asked to do so
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Important Instructions / ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Form Number :
DISTANCE LEARNING PROGRAMME
(Academic Session : 2018 - 2019)
TARGET : PRE-MEDICAL 2019
LEADER TEST SERIES / JOINT PACKAGE COURSE
Test Type : Unit Test Test # 08 Test Pattern 
:
 NEET-UG
TEST DATE 
:
 21 - 10 - 2018
*0 99 9 DM D3 10 31800 8*
Paper Code
(0999DMD310318008)
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 1/ 31
BEWARE OF NEGATIVE MARKING
HAVE CONTROL ? ? HAVE PATIENCE ? ? HAVE CONFIDENCE ? 100% SUCCESS
1. Maximum density of H
2
O is at temperature :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. The rods of length L
1
 and L
2
 are made of materials
whose coefficients of linear expansion are ?
1
 and
?
2
 respectively. If the difference between the two
length is independent of temperatures, then :-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. The coefficient of apparent expansion of liquid
when determined using two different vessels A &
B are ?
1
 & ?
2
 respectively. If the coefficient of
linear expansion of the vessel A is ?, then
coefficient of linear expansion of B :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. Water is used to cool radiators of engines in car
because :-
(1) of its lower density
(2) It is easily available
(3) It is cheap
(4) It has high specific heat
5. Heat required to melt 1gm of ice is 80 cal. A man
melts 60 gm of ice by chewing it in one minute,
his power is :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. The radiant energy from sun incident normally at
the surface of earth is 20 kcal/m
2
–min. What
would have been the radiant energy incident
normally on the earth if the sun had a temp. twice
of the present one ?
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
1. H
2
O ??? ?? ????? ? ?? ??? ? ?? ?? ???? ??? ? ???? :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. L
1
 ? L
2
 ??? ??? ? ????? ??? ? ???? ??? ??? ? ?? ?
1
 ?? ?
2
 ?? ?? ?? ? ??? ??
?? ??????????? ? ??????? ?? ?? ??????? ?? ???? ?? ? ????????? ?? ??? ?? ?? ?????
??? ?? ??? ???? ?????????? ?? ? ?? ????? ?? ? ????:-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. ? ? ? ? ?? ? ? ? ? ? ? ? ? ?? ? ? ?A ? B ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
???? ? ?????????? ?????? ? ?? ??? ???? ???? ?
1
 ? ?
2
 ??? ? ?? ???? ? ? ?? ?
?? ?? ?? ??A ?? ? ?? ? ??? ? ???? ?? ??????? ? ?? ? ??? ? ??? ?B ?? ? ? ? ????
????? ???? ??? ??? ???? :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. ?? ?? ? ??? ??????? ?? ???? ??? ?? ????? ??? ?? ?? ????? ??? ??? ???? ??? ??
???? ? ?? :-
(1) ???? ?? ??? ??? ??? ??
(2) ?????? ? ??? ???? ?? ??? ?? ?
(3) ? ??? ?? ? ????? ??
(4) ???? ? ??????? ? ?? ??? ???? ??? ??? ??
5. 1gm ?? ?? ?? ??????? ???? ? ????? 80 cal ???? ? ?????? ? ???
????? ?? ??60 gm ?? ?? ????1 minute ?? ?? ???? ???? ??? ?
??? ?? ? ? ?? ???? ? ??? ??? ?? :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. ?? ??? ?? ? ? ??? ?? ? ?? ???? ??? ?? ? ??? ? ?? ? ?? ?20 kcal/m
2
–min.
?? ??? ? ??? ????????? ?? ?? ????? ???? ???? ?? ?? ??? ?? ?? ?? ?? ???
?? ??? ?? ??? ???? ?? ???? ??? ??? ???? ?? ? ??? ???? ?? ? ???? ? ??? ??? ??
?? ??? ?? ???? ???? ??? ???? ?? ?? ?????
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
TOPIC : Thermal Physics (Thermal Expansion, Calorimetry, Heat transfer, K.T.G. & Thermodynamics,
Ray Optics & Optical Instrument
09 99 D MD3 10 3 18 0 08
Target : Pre-Medical 2019/NEET-UG/21-10-2018
LTS - 2/ 31
7. In a composite rod, when two rods of different
lengths and of the same area are joined end to end.
If K is the coefficient of thermal conductivity
of composite rod, then 
1 2
K
? ? ?
? ?
? ?
? ?
 is equal to :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. If the wavelengths of maximum intensity of
radiations emitted by the sun and the moon are
0.5 × 10
–6
 m and 10
–4
m respectively. The ratio of
their temperatures is :-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. A motor-car tyre has a pressure of 2atm at 27°C.
It suddenly bursts. If 
p
v
C
1.4
C
? ?
?
? ?
? ?
 for air, find
resulting temp :-
(1) 27 K (2) 27°C
(3) –27°C (4) 246°C
10. P-V plots for two gases during adiabatic process
are shown in the figure. Plots (1) and (2)
corresponds respectively to :-
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. P-V diagram of 2g of He gas for A ?B process
is shown. What is the heat given to the gas ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
7. ?? ? ? ?? ? ??? ?? ?? ? ??? ? ? ??? ??? ?? ? ?? ?? ? ?? ?? ? ??? ? ? ??? ?? ? ?? ??
??? ?? ?? ???????? ? ???? ????? ????????????? ?? ?? ?? ??? ?? ?? ?????? ??
?????? ???? ??? ?? ? ??? ??K ?? ?? ????
1 2
K
? ? ?
? ?
? ?
? ?
 ??? ?? :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?????? ???? ??? ???0.5 × 10
–6
 m ? 10
–4
m ?? ?? ? ?????? ? ????
??? ???? ??? ?? ?:-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. ??? ?? ?? ??? ?? ??? ?? ??27°C ? ???? ??? ?2 atm ???? ? ? ?? ??
?????? ?? ? ????? ?? ?? ???? ????? ??? ?? ???
p
v
C
1.4
C
? ?
?
? ?
? ?
,
????? ? ???? ??? ??? ? ?? ????
(1) 27 K (2) 27°C (3) –27°C (4) 246°C
10. ???? ? ? ???????? ? ??? ??????? ??? ?? ????? ? ????P-V ??????? ???? ?? ?
???? ? ?? ?? ?? ?? ?? ???? (1) ??(2) ??? ?? ? ?? ????? ?? ?? ? ??? ??
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. 2g He ??? ????A ?B ??? ? ??? ??? ? ???P-V ???? ? ???? ??
???? ? ? ?? ??? ? ?? ?? ?? ?? ?? ? ?? ?? ??? ?? ?? ?? ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
Page 4


Corporate Office : ???? ? CAREER INSTITUTE, “SANKALP”, CP-6, Indra Vihar, Kota (Rajasthan)-324005
 +91-744-2757575   dlp@allen.ac.in   www.dlp.allen.ac.in, dsat.allen.ac.in
1. A seat marked with Reg. No. will be allotted to each student. The student should ensure that he/she occupies the correct seat only.
If any student is found to have occupied the seat of another student, both the students shall be removed from the examination and
shall have to accept any other penalty imposed upon them.
??????? ??? ????? ? ??? ???? ???? ??? ?? ?? ??? ?? ????? ?????? ???? ? ?? ? ????? ?? ? ????? ???? ? ?????? ??? ??? ?? ??? ?? ???? ??? ??? ??? ????? ? ????? ?? ???? ??? ????? ? ??? ?????? ??
?? ??????? ???? ???????????????? ????? ????? ??? ?? ??????? ??? ??? ???? ?? ???? ????? ??????? ????????? ?? ??????????? ????? ??? ??????????? ?????????
2. Duration of Test is 3 Hours and Questions Paper Contains 180 Questions. The Max.  Marks are 720.
??????? ?????????3 ?????? ????? ???? ???? ?? ?? ??? ?180 ?? ?? ???? ???? ?????? ??? ??720 ? ?? ??
3. Student can not use log tables and calculators or any other material in the examination hall.
??? ????? ?? ??????? ??? ??? ?? ??????? ??? ????????????? ??????? ???? ??? ????? ?? ??????? ?? ?? ??????? ?? ?
4. Student must abide by the instructions issued during the examination, by the invigilators or the centre incharge.
??????? ??? ??????? ????? ?? ??? ???????? ?????? ?? ?????????? ??? ????????? ????? ???????????? ?? ?
5. Before attempting the question paper ensure that it contains all the pages and that no question is missing.
???? ?? ?? ???? ??????????????? ????? ??????? ??????? ?????? ???? ?????? ???? ??????? ?? ??????????? ?
6. Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer is harmful.
??????? ????????? ??? ??? ????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ????? ????? ??????? ???? ??????????? ?????? ????? ?
7. Use Blue or Black Ball Point Pen Only to completely darken the appropriate circle.
????????? ??? ??? ???? ?? ??? ?????? ?? ?????? ??? ????? ???????? ?????? ???? ??? ??????? ?????
8. If you want to attempt any question then circle should be properly darkened as shown below, otherwise leave blank.
???? ???? ????? ? ?? ?? ??? ? ??? ????? ??? ?????? ? ???? ?? ?? ???? ????? ???? ?? ??? ? ????? ?? ?????? ???? ?? ????? ?? ??? ??? ?? ????? ?? ????? ???? ?? ???? ?????? ??? ?
Correct Method ( ?????? ???) Wrong Method ( ?????????)
9. Please do not fold the Answer Sheet and do not make any stray marks on it.
?? ???? ????? ?? ?? ??? ??? ? ????? ?????? ???? ???? ?? ???????? ????? ??? ??? ??????? ??????
10. The candidate will not do any rough work on the Answer Sheet.
????????????????? ?? ?? ???????????? ???????? ??? ??? ??????????
11. CHANGING AN ANSWER IS NOT ALLOWED.
?? ?????????? ?? ?? ?? ?? ????? ?? ????
12. Use of Pencil is strictly prohibited
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ensure that your OMR Answer Sheet has been signed by the Invigilator and the candidate himself/ herself.
??? ??? ???????????OMR ?? ??????? ????? ?? ??? ????? ??? ?????????????????????? ???? ????? ???????? ???? ?
Your Target is to secure Good Rank in Pre-Medical 2019
Do not open this Test Booklet until you are asked to do so
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Important Instructions / ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Form Number :
DISTANCE LEARNING PROGRAMME
(Academic Session : 2018 - 2019)
TARGET : PRE-MEDICAL 2019
LEADER TEST SERIES / JOINT PACKAGE COURSE
Test Type : Unit Test Test # 08 Test Pattern 
:
 NEET-UG
TEST DATE 
:
 21 - 10 - 2018
*0 99 9 DM D3 10 31800 8*
Paper Code
(0999DMD310318008)
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 1/ 31
BEWARE OF NEGATIVE MARKING
HAVE CONTROL ? ? HAVE PATIENCE ? ? HAVE CONFIDENCE ? 100% SUCCESS
1. Maximum density of H
2
O is at temperature :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. The rods of length L
1
 and L
2
 are made of materials
whose coefficients of linear expansion are ?
1
 and
?
2
 respectively. If the difference between the two
length is independent of temperatures, then :-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. The coefficient of apparent expansion of liquid
when determined using two different vessels A &
B are ?
1
 & ?
2
 respectively. If the coefficient of
linear expansion of the vessel A is ?, then
coefficient of linear expansion of B :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. Water is used to cool radiators of engines in car
because :-
(1) of its lower density
(2) It is easily available
(3) It is cheap
(4) It has high specific heat
5. Heat required to melt 1gm of ice is 80 cal. A man
melts 60 gm of ice by chewing it in one minute,
his power is :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. The radiant energy from sun incident normally at
the surface of earth is 20 kcal/m
2
–min. What
would have been the radiant energy incident
normally on the earth if the sun had a temp. twice
of the present one ?
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
1. H
2
O ??? ?? ????? ? ?? ??? ? ?? ?? ???? ??? ? ???? :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. L
1
 ? L
2
 ??? ??? ? ????? ??? ? ???? ??? ??? ? ?? ?
1
 ?? ?
2
 ?? ?? ?? ? ??? ??
?? ??????????? ? ??????? ?? ?? ??????? ?? ???? ?? ? ????????? ?? ??? ?? ?? ?????
??? ?? ??? ???? ?????????? ?? ? ?? ????? ?? ? ????:-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. ? ? ? ? ?? ? ? ? ? ? ? ? ? ?? ? ? ?A ? B ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
???? ? ?????????? ?????? ? ?? ??? ???? ???? ?
1
 ? ?
2
 ??? ? ?? ???? ? ? ?? ?
?? ?? ?? ??A ?? ? ?? ? ??? ? ???? ?? ??????? ? ?? ? ??? ? ??? ?B ?? ? ? ? ????
????? ???? ??? ??? ???? :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. ?? ?? ? ??? ??????? ?? ???? ??? ?? ????? ??? ?? ?? ????? ??? ??? ???? ??? ??
???? ? ?? :-
(1) ???? ?? ??? ??? ??? ??
(2) ?????? ? ??? ???? ?? ??? ?? ?
(3) ? ??? ?? ? ????? ??
(4) ???? ? ??????? ? ?? ??? ???? ??? ??? ??
5. 1gm ?? ?? ?? ??????? ???? ? ????? 80 cal ???? ? ?????? ? ???
????? ?? ??60 gm ?? ?? ????1 minute ?? ?? ???? ???? ??? ?
??? ?? ? ? ?? ???? ? ??? ??? ?? :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. ?? ??? ?? ? ? ??? ?? ? ?? ???? ??? ?? ? ??? ? ?? ? ?? ?20 kcal/m
2
–min.
?? ??? ? ??? ????????? ?? ?? ????? ???? ???? ?? ?? ??? ?? ?? ?? ?? ???
?? ??? ?? ??? ???? ?? ???? ??? ??? ???? ?? ? ??? ???? ?? ? ???? ? ??? ??? ??
?? ??? ?? ???? ???? ??? ???? ?? ?? ?????
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
TOPIC : Thermal Physics (Thermal Expansion, Calorimetry, Heat transfer, K.T.G. & Thermodynamics,
Ray Optics & Optical Instrument
09 99 D MD3 10 3 18 0 08
Target : Pre-Medical 2019/NEET-UG/21-10-2018
LTS - 2/ 31
7. In a composite rod, when two rods of different
lengths and of the same area are joined end to end.
If K is the coefficient of thermal conductivity
of composite rod, then 
1 2
K
? ? ?
? ?
? ?
? ?
 is equal to :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. If the wavelengths of maximum intensity of
radiations emitted by the sun and the moon are
0.5 × 10
–6
 m and 10
–4
m respectively. The ratio of
their temperatures is :-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. A motor-car tyre has a pressure of 2atm at 27°C.
It suddenly bursts. If 
p
v
C
1.4
C
? ?
?
? ?
? ?
 for air, find
resulting temp :-
(1) 27 K (2) 27°C
(3) –27°C (4) 246°C
10. P-V plots for two gases during adiabatic process
are shown in the figure. Plots (1) and (2)
corresponds respectively to :-
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. P-V diagram of 2g of He gas for A ?B process
is shown. What is the heat given to the gas ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
7. ?? ? ? ?? ? ??? ?? ?? ? ??? ? ? ??? ??? ?? ? ?? ?? ? ?? ?? ? ??? ? ? ??? ?? ? ?? ??
??? ?? ?? ???????? ? ???? ????? ????????????? ?? ?? ?? ??? ?? ?? ?????? ??
?????? ???? ??? ?? ? ??? ??K ?? ?? ????
1 2
K
? ? ?
? ?
? ?
? ?
 ??? ?? :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?????? ???? ??? ???0.5 × 10
–6
 m ? 10
–4
m ?? ?? ? ?????? ? ????
??? ???? ??? ?? ?:-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. ??? ?? ?? ??? ?? ??? ?? ??27°C ? ???? ??? ?2 atm ???? ? ? ?? ??
?????? ?? ? ????? ?? ?? ???? ????? ??? ?? ???
p
v
C
1.4
C
? ?
?
? ?
? ?
,
????? ? ???? ??? ??? ? ?? ????
(1) 27 K (2) 27°C (3) –27°C (4) 246°C
10. ???? ? ? ???????? ? ??? ??????? ??? ?? ????? ? ????P-V ??????? ???? ?? ?
???? ? ?? ?? ?? ?? ?? ???? (1) ??(2) ??? ?? ? ?? ????? ?? ?? ? ??? ??
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. 2g He ??? ????A ?B ??? ? ??? ??? ? ???P-V ???? ? ???? ??
???? ? ? ?? ??? ? ?? ?? ?? ?? ?? ? ?? ?? ??? ?? ?? ?? ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 3/ 31
12. Gas obey P
2
V = constant. The initial
temperature and volume are T
0
 and V
0
. If gas
expands to volume 2V
0
, the final temp is :-
(1) 
2
T
0
(2) 2T
0
(3) T
0
/2 (4) T
0
/
2
13. A body cools from 62°C to 50°C in 10 minutes and
to 42°C is next 10 minutes. The temp. of
surrounding is :-
(1) 16°C (2) 26°C (3) 36°C (4) 21°C
14. A centigrade and a Fahrenheit thermometer are
dipped in boiling water. The water temp is lowered
until the Fahrenheit temp. register 140°. What is
the fall in the temperature as registered by
centigrade thermometer :-
(1) 30° (2) 40° (3) 60° (4) 80º
15. A steel tape measures the length of a copper rod as
90 cm when both are at 10°C. What would the tape
read for the length of rod when both are at 30°C?
[ ?
st
= 1.2 × 10
–5
/°C & ?
cu
 = 1.7 × 10
–5
/°C]
(1) 89 cm (2) 90.21cm
(3) 89.80 cm (4) 90.01 cm
16. A calorimeter contains 0.2 kg of water at 30°C,
0.1kg of water at 60°C is added to it, the mixture
is well stirred and the resulting temperature is
found to be 35°C. The thermal capacity of
calorimeter is :-
(1) 6300 J/K (2) 1260 J/K
(3) 4200 J/K (4) 8400 J/K
17. A tap supplies water at 10°C and another tap at
100°C. How much hot water must be taken so that
we get 20 kg water at 35°C ?
(1) 7.2 kg (2) 10 kg
(3) 5.6 kg (4) 14.4 kg
18. The ratio of thermal conductivity of two rods of
different materials is  5 : 4. The two rods of same
area and same thermal resistance will have lengths
is the ratio :-
(1) 5 : 4 (2) 1 : 9 (3) 9 : 1 (4) 4 : 5
19. Consider two insulating sheets with thermal
resistances R
1
 and R
2
 as shown. The temperatures
? is :-
R
2
R
1
?
2 ? ?
1
(1) 
1 2 1 2
1 2 1 2
R R
(R R )( )
? ?
? ? ? ?
(2) 
1 1 2 2
1 2
R R
R R
? ? ?
?
(3) 
1 2 1 2
2 2
1 2
( )(R R )
R R
? ? ?
?
(4) 
1 2 2 1
1 2
R R
R R
? ? ?
?
12. ??? ?P
2
V = ?????? ?? ??? ?? ?? ??? ?? ?? ?? ?? ??? ????? ?? ???
?? ?? ??? ?T
0
 ? V
0
 ?? ?? ? ??? ?2V
0
 ????? ? ??? ????? ? ?? ???
????? ? ? ?? ????? ? ?? ?? ?? ?:-
(1) 
2
T
0
(2) 2T
0
(3) T
0
/2 (4) T
0
/
2
13. ????? ? ??? ??10 ????? ?? ???62°C ???50°C ??? ? ??? ?? ??? ????
?? ? ??? ?? ??? ? 10 ????? ? ?? ? 42°C ???? ?? ???? ??? ??? ? ??? ??:-
(1) 16°C (2) 26°C
(3) 36°C (4) 21°C
14. ? ? ? ? ?? ? ? ? ?? ???? ? ? ? ? ? ? ? ? ???? ??? ?? ????? ???? ?? ??? ? ???? ??? ?? ?? ?
? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ? ? ? ? ? ?? ? ?140°
???? ? ? ??? ???????? ?????? ? ?? ? ? ? ? ?? ? ? ? ? ?? ?? ????? ???? ? ??? ?? ?
?? ?? ?? ???? ????? ?? ?????:-
(1) 30° (2) 40° (3) 60° (4) 80º
15. ??? ?? ??? ?? ??? ? ???? ?? ??? ??? ? ??? ????90 cm ??????? ? ?? ?? ??
???? ????10°C ???? ? ?? ??????? ????30°C ???? ?? ?? ??? ?? ???? ??? ???
???? ? ?? ??? ?? ?? ?? ????????? ?????? ???? ?
??
st
= 1.2 × 10
–5
/°C & ?
cu
 = 1.7 × 10
–5
/°C]
(1) 89 cm (2) 90.21cm
(3) 89.80 cm (4) 90.01 cm
16. ????? ?? ??????? ?? ?? 30°C ???0.2 kg ???? ? ?? ????? ???60°C
?? ?0.1kg ? ? ?? ? ? ? ??? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ??? ?
????? ?? ? ????? ????? ???? ????35°C ??? ?? ? ???? ??? ? ?? ?????? ???? ?
?? ? ?? ??? ???? ??? ? ?? ?:-
(1) 6300 J/K (2) 1260 J/K
(3) 4200 J/K (4) 8400 J/K
17. ? ? ? ? ? 10°C ? ? ? ? ?? ? ? ? ? ? ? ? 100°C ? ? ?? ? ? ? ? ? ? ? ? ??? ?
35°C ? ??20 kg ?? ?? ? ? ?? ? ?? ?? ?? ? ?? ? ? ?? ?? ? ?? ?? ? ?? ?? ?? ??
? ? ? ? ? ? ? ? ? ? ? ?
(1) 7.2 kg (2) 10 kg
(3) 5.6 kg (4) 14.4 kg
18. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
5 : 4 ?? ?? ? ???? ??? ??? ??? ??? ? ??? ??? ?? ? ?? ? ? ??? ?? ? ??? ?? ?? ? ?? ? ?
????? ? ??? ????? ?? ??? ?? ??? ?? ?? ????? ???? ?? ??? ?? ??? ????? ?? ??:-
(1) 5 : 4 (2) 1 : 9
(3) 9 : 1 (4) 4 : 5
19. R
1
 ?? ? R
2
 ????? ? ??? ????? ? ???? ???? ? ???? ?? ????? ??? ??? ? ?? ??? ??
???? ??? ?? ?? ? ??? ? ?? ?:-
R
2
R
1
?
2 ? ?
1
(1) 
1 2 1 2
1 2 1 2
R R
(R R )( )
? ?
? ? ? ?
(2) 
1 1 2 2
1 2
R R
R R
? ? ?
?
(3) 
1 2 1 2
2 2
1 2
( )(R R )
R R
? ? ?
?
(4) 
1 2 2 1
1 2
R R
R R
? ? ?
?
Page 5


Corporate Office : ???? ? CAREER INSTITUTE, “SANKALP”, CP-6, Indra Vihar, Kota (Rajasthan)-324005
 +91-744-2757575   dlp@allen.ac.in   www.dlp.allen.ac.in, dsat.allen.ac.in
1. A seat marked with Reg. No. will be allotted to each student. The student should ensure that he/she occupies the correct seat only.
If any student is found to have occupied the seat of another student, both the students shall be removed from the examination and
shall have to accept any other penalty imposed upon them.
??????? ??? ????? ? ??? ???? ???? ??? ?? ?? ??? ?? ????? ?????? ???? ? ?? ? ????? ?? ? ????? ???? ? ?????? ??? ??? ?? ??? ?? ???? ??? ??? ??? ????? ? ????? ?? ???? ??? ????? ? ??? ?????? ??
?? ??????? ???? ???????????????? ????? ????? ??? ?? ??????? ??? ??? ???? ?? ???? ????? ??????? ????????? ?? ??????????? ????? ??? ??????????? ?????????
2. Duration of Test is 3 Hours and Questions Paper Contains 180 Questions. The Max.  Marks are 720.
??????? ?????????3 ?????? ????? ???? ???? ?? ?? ??? ?180 ?? ?? ???? ???? ?????? ??? ??720 ? ?? ??
3. Student can not use log tables and calculators or any other material in the examination hall.
??? ????? ?? ??????? ??? ??? ?? ??????? ??? ????????????? ??????? ???? ??? ????? ?? ??????? ?? ?? ??????? ?? ?
4. Student must abide by the instructions issued during the examination, by the invigilators or the centre incharge.
??????? ??? ??????? ????? ?? ??? ???????? ?????? ?? ?????????? ??? ????????? ????? ???????????? ?? ?
5. Before attempting the question paper ensure that it contains all the pages and that no question is missing.
???? ?? ?? ???? ??????????????? ????? ??????? ??????? ?????? ???? ?????? ???? ??????? ?? ??????????? ?
6. Each correct answer carries 4 marks, while 1 mark will be deducted for every wrong answer. Guessing of answer is harmful.
??????? ????????? ??? ??? ????? ??? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ????? ????? ??????? ???? ??????????? ?????? ????? ?
7. Use Blue or Black Ball Point Pen Only to completely darken the appropriate circle.
????????? ??? ??? ???? ?? ??? ?????? ?? ?????? ??? ????? ???????? ?????? ???? ??? ??????? ?????
8. If you want to attempt any question then circle should be properly darkened as shown below, otherwise leave blank.
???? ???? ????? ? ?? ?? ??? ? ??? ????? ??? ?????? ? ???? ?? ?? ???? ????? ???? ?? ??? ? ????? ?? ?????? ???? ?? ????? ?? ??? ??? ?? ????? ?? ????? ???? ?? ???? ?????? ??? ?
Correct Method ( ?????? ???) Wrong Method ( ?????????)
9. Please do not fold the Answer Sheet and do not make any stray marks on it.
?? ???? ????? ?? ?? ??? ??? ? ????? ?????? ???? ???? ?? ???????? ????? ??? ??? ??????? ??????
10. The candidate will not do any rough work on the Answer Sheet.
????????????????? ?? ?? ???????????? ???????? ??? ??? ??????????
11. CHANGING AN ANSWER IS NOT ALLOWED.
?? ?????????? ?? ?? ?? ?? ????? ?? ????
12. Use of Pencil is strictly prohibited
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Ensure that your OMR Answer Sheet has been signed by the Invigilator and the candidate himself/ herself.
??? ??? ???????????OMR ?? ??????? ????? ?? ??? ????? ??? ?????????????????????? ???? ????? ???????? ???? ?
Your Target is to secure Good Rank in Pre-Medical 2019
Do not open this Test Booklet until you are asked to do so
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Important Instructions / ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Form Number :
DISTANCE LEARNING PROGRAMME
(Academic Session : 2018 - 2019)
TARGET : PRE-MEDICAL 2019
LEADER TEST SERIES / JOINT PACKAGE COURSE
Test Type : Unit Test Test # 08 Test Pattern 
:
 NEET-UG
TEST DATE 
:
 21 - 10 - 2018
*0 99 9 DM D3 10 31800 8*
Paper Code
(0999DMD310318008)
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 1/ 31
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1. Maximum density of H
2
O is at temperature :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. The rods of length L
1
 and L
2
 are made of materials
whose coefficients of linear expansion are ?
1
 and
?
2
 respectively. If the difference between the two
length is independent of temperatures, then :-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. The coefficient of apparent expansion of liquid
when determined using two different vessels A &
B are ?
1
 & ?
2
 respectively. If the coefficient of
linear expansion of the vessel A is ?, then
coefficient of linear expansion of B :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. Water is used to cool radiators of engines in car
because :-
(1) of its lower density
(2) It is easily available
(3) It is cheap
(4) It has high specific heat
5. Heat required to melt 1gm of ice is 80 cal. A man
melts 60 gm of ice by chewing it in one minute,
his power is :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. The radiant energy from sun incident normally at
the surface of earth is 20 kcal/m
2
–min. What
would have been the radiant energy incident
normally on the earth if the sun had a temp. twice
of the present one ?
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
1. H
2
O ??? ?? ????? ? ?? ??? ? ?? ?? ???? ??? ? ???? :-
(1) 32° F (2) 4° K
(3) 4° F (4) 39.2° F
2. L
1
 ? L
2
 ??? ??? ? ????? ??? ? ???? ??? ??? ? ?? ?
1
 ?? ?
2
 ?? ?? ?? ? ??? ??
?? ??????????? ? ??????? ?? ?? ??????? ?? ???? ?? ? ????????? ?? ??? ?? ?? ?????
??? ?? ??? ???? ?????????? ?? ? ?? ????? ?? ? ????:-
(1) 
1 1
2 2
L
L
?
?
?
(2) 
1 2
2 1
L
L
?
?
?
(3) 
2 2
1 1 2 2
L L ? ? ? (4) 
2 2
1 1 2 2
L d L ? ?
3. ? ? ? ? ?? ? ? ? ? ? ? ? ? ?? ? ? ?A ? B ? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
???? ? ?????????? ?????? ? ?? ??? ???? ???? ?
1
 ? ?
2
 ??? ? ?? ???? ? ? ?? ?
?? ?? ?? ??A ?? ? ?? ? ??? ? ???? ?? ??????? ? ?? ? ??? ? ??? ?B ?? ? ? ? ????
????? ???? ??? ??? ???? :-
(1) 
1 2
1 2
? ? ?
? ? ?
(2) 
1 2
2
? ? ?
?
(3) 
1 2
3
? ? ? ? ?
(4) 
1 2
3
? ? ?
? ?
4. ?? ?? ? ??? ??????? ?? ???? ??? ?? ????? ??? ?? ?? ????? ??? ??? ???? ??? ??
???? ? ?? :-
(1) ???? ?? ??? ??? ??? ??
(2) ?????? ? ??? ???? ?? ??? ?? ?
(3) ? ??? ?? ? ????? ??
(4) ???? ? ??????? ? ?? ??? ???? ??? ??? ??
5. 1gm ?? ?? ?? ??????? ???? ? ????? 80 cal ???? ? ?????? ? ???
????? ?? ??60 gm ?? ?? ????1 minute ?? ?? ???? ???? ??? ?
??? ?? ? ? ?? ???? ? ??? ??? ?? :-
(1) 4000 W (2) 336 W
(3) 1.33 W (4) 0.75 W
6. ?? ??? ?? ? ? ??? ?? ? ?? ???? ??? ?? ? ??? ? ?? ? ?? ?20 kcal/m
2
–min.
?? ??? ? ??? ????????? ?? ?? ????? ???? ???? ?? ?? ??? ?? ?? ?? ?? ???
?? ??? ?? ??? ???? ?? ???? ??? ??? ???? ?? ? ??? ???? ?? ? ???? ? ??? ??? ??
?? ??? ?? ???? ???? ??? ???? ?? ?? ?????
(1) 40 kcal/m
2
-min (2) 80 kcal/m
2
-min
(3) 160 kcal/m
2
-min (4) 320 kcal/m
2
-min
TOPIC : Thermal Physics (Thermal Expansion, Calorimetry, Heat transfer, K.T.G. & Thermodynamics,
Ray Optics & Optical Instrument
09 99 D MD3 10 3 18 0 08
Target : Pre-Medical 2019/NEET-UG/21-10-2018
LTS - 2/ 31
7. In a composite rod, when two rods of different
lengths and of the same area are joined end to end.
If K is the coefficient of thermal conductivity
of composite rod, then 
1 2
K
? ? ?
? ?
? ?
? ?
 is equal to :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. If the wavelengths of maximum intensity of
radiations emitted by the sun and the moon are
0.5 × 10
–6
 m and 10
–4
m respectively. The ratio of
their temperatures is :-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. A motor-car tyre has a pressure of 2atm at 27°C.
It suddenly bursts. If 
p
v
C
1.4
C
? ?
?
? ?
? ?
 for air, find
resulting temp :-
(1) 27 K (2) 27°C
(3) –27°C (4) 246°C
10. P-V plots for two gases during adiabatic process
are shown in the figure. Plots (1) and (2)
corresponds respectively to :-
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. P-V diagram of 2g of He gas for A ?B process
is shown. What is the heat given to the gas ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
7. ?? ? ? ?? ? ??? ?? ?? ? ??? ? ? ??? ??? ?? ? ?? ?? ? ?? ?? ? ??? ? ? ??? ?? ? ?? ??
??? ?? ?? ???????? ? ???? ????? ????????????? ?? ?? ?? ??? ?? ?? ?????? ??
?????? ???? ??? ?? ? ??? ??K ?? ?? ????
1 2
K
? ? ?
? ?
? ?
? ?
 ??? ?? :-
(1) 
1 2
1 2
K K
?
? ?
(2) 
1 2
2 1
K K
?
? ?
(3) 
1 2
1 2
K K
?
? ?
(4) 
1 2
2 1
K K
?
? ?
8. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
?????? ???? ??? ???0.5 × 10
–6
 m ? 10
–4
m ?? ?? ? ?????? ? ????
??? ???? ??? ?? ?:-
(1) 
1
100
(2) 
1
200
(3) 100 (4) 200
9. ??? ?? ?? ??? ?? ??? ?? ??27°C ? ???? ??? ?2 atm ???? ? ? ?? ??
?????? ?? ? ????? ?? ?? ???? ????? ??? ?? ???
p
v
C
1.4
C
? ?
?
? ?
? ?
,
????? ? ???? ??? ??? ? ?? ????
(1) 27 K (2) 27°C (3) –27°C (4) 246°C
10. ???? ? ? ???????? ? ??? ??????? ??? ?? ????? ? ????P-V ??????? ???? ?? ?
???? ? ?? ?? ?? ?? ?? ???? (1) ??(2) ??? ?? ? ?? ????? ?? ?? ? ??? ??
V
1
P
2
(1) He & O
2
(2) O
2
 & He
(3) He & Ar (4) O
2
 & N
2
11. 2g He ??? ????A ?B ??? ? ??? ??? ? ???P-V ???? ? ???? ??
???? ? ? ?? ??? ? ?? ?? ?? ?? ?? ? ?? ?? ??? ?? ?? ?? ?
V
P
P
0
V
0
2V
0
2P
0
B
A
(1) 4P
0
V
0
(2) 6P
0
V
0
(3) 4.5P
0
V
0
(4) 2P
0
V
0
Leader Test Series/Joint Package Course/NEET-UG/21-10-2018
0 99 9D M D3 10 3 18 00 8 LTS - 3/ 31
12. Gas obey P
2
V = constant. The initial
temperature and volume are T
0
 and V
0
. If gas
expands to volume 2V
0
, the final temp is :-
(1) 
2
T
0
(2) 2T
0
(3) T
0
/2 (4) T
0
/
2
13. A body cools from 62°C to 50°C in 10 minutes and
to 42°C is next 10 minutes. The temp. of
surrounding is :-
(1) 16°C (2) 26°C (3) 36°C (4) 21°C
14. A centigrade and a Fahrenheit thermometer are
dipped in boiling water. The water temp is lowered
until the Fahrenheit temp. register 140°. What is
the fall in the temperature as registered by
centigrade thermometer :-
(1) 30° (2) 40° (3) 60° (4) 80º
15. A steel tape measures the length of a copper rod as
90 cm when both are at 10°C. What would the tape
read for the length of rod when both are at 30°C?
[ ?
st
= 1.2 × 10
–5
/°C & ?
cu
 = 1.7 × 10
–5
/°C]
(1) 89 cm (2) 90.21cm
(3) 89.80 cm (4) 90.01 cm
16. A calorimeter contains 0.2 kg of water at 30°C,
0.1kg of water at 60°C is added to it, the mixture
is well stirred and the resulting temperature is
found to be 35°C. The thermal capacity of
calorimeter is :-
(1) 6300 J/K (2) 1260 J/K
(3) 4200 J/K (4) 8400 J/K
17. A tap supplies water at 10°C and another tap at
100°C. How much hot water must be taken so that
we get 20 kg water at 35°C ?
(1) 7.2 kg (2) 10 kg
(3) 5.6 kg (4) 14.4 kg
18. The ratio of thermal conductivity of two rods of
different materials is  5 : 4. The two rods of same
area and same thermal resistance will have lengths
is the ratio :-
(1) 5 : 4 (2) 1 : 9 (3) 9 : 1 (4) 4 : 5
19. Consider two insulating sheets with thermal
resistances R
1
 and R
2
 as shown. The temperatures
? is :-
R
2
R
1
?
2 ? ?
1
(1) 
1 2 1 2
1 2 1 2
R R
(R R )( )
? ?
? ? ? ?
(2) 
1 1 2 2
1 2
R R
R R
? ? ?
?
(3) 
1 2 1 2
2 2
1 2
( )(R R )
R R
? ? ?
?
(4) 
1 2 2 1
1 2
R R
R R
? ? ?
?
12. ??? ?P
2
V = ?????? ?? ??? ?? ?? ??? ?? ?? ?? ?? ??? ????? ?? ???
?? ?? ??? ?T
0
 ? V
0
 ?? ?? ? ??? ?2V
0
 ????? ? ??? ????? ? ?? ???
????? ? ? ?? ????? ? ?? ?? ?? ?:-
(1) 
2
T
0
(2) 2T
0
(3) T
0
/2 (4) T
0
/
2
13. ????? ? ??? ??10 ????? ?? ???62°C ???50°C ??? ? ??? ?? ??? ????
?? ? ??? ?? ??? ? 10 ????? ? ?? ? 42°C ???? ?? ???? ??? ??? ? ??? ??:-
(1) 16°C (2) 26°C
(3) 36°C (4) 21°C
14. ? ? ? ? ?? ? ? ? ?? ???? ? ? ? ? ? ? ? ? ???? ??? ?? ????? ???? ?? ??? ? ???? ??? ?? ?? ?
? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ??? ? ? ? ? ? ?? ? ?140°
???? ? ? ??? ???????? ?????? ? ?? ? ? ? ? ?? ? ? ? ? ?? ?? ????? ???? ? ??? ?? ?
?? ?? ?? ???? ????? ?? ?????:-
(1) 30° (2) 40° (3) 60° (4) 80º
15. ??? ?? ??? ?? ??? ? ???? ?? ??? ??? ? ??? ????90 cm ??????? ? ?? ?? ??
???? ????10°C ???? ? ?? ??????? ????30°C ???? ?? ?? ??? ?? ???? ??? ???
???? ? ?? ??? ?? ?? ?? ????????? ?????? ???? ?
??
st
= 1.2 × 10
–5
/°C & ?
cu
 = 1.7 × 10
–5
/°C]
(1) 89 cm (2) 90.21cm
(3) 89.80 cm (4) 90.01 cm
16. ????? ?? ??????? ?? ?? 30°C ???0.2 kg ???? ? ?? ????? ???60°C
?? ?0.1kg ? ? ?? ? ? ? ??? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ?? ? ? ? ??? ?
????? ?? ? ????? ????? ???? ????35°C ??? ?? ? ???? ??? ? ?? ?????? ???? ?
?? ? ?? ??? ???? ??? ? ?? ?:-
(1) 6300 J/K (2) 1260 J/K
(3) 4200 J/K (4) 8400 J/K
17. ? ? ? ? ? 10°C ? ? ? ? ?? ? ? ? ? ? ? ? 100°C ? ? ?? ? ? ? ? ? ? ? ? ??? ?
35°C ? ??20 kg ?? ?? ? ? ?? ? ?? ?? ?? ? ?? ? ? ?? ?? ? ?? ?? ? ?? ?? ?? ??
? ? ? ? ? ? ? ? ? ? ? ?
(1) 7.2 kg (2) 10 kg
(3) 5.6 kg (4) 14.4 kg
18. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
5 : 4 ?? ?? ? ???? ??? ??? ??? ??? ? ??? ??? ?? ? ?? ? ? ??? ?? ? ??? ?? ?? ? ?? ? ?
????? ? ??? ????? ?? ??? ?? ??? ?? ?? ????? ???? ?? ??? ?? ??? ????? ?? ??:-
(1) 5 : 4 (2) 1 : 9
(3) 9 : 1 (4) 4 : 5
19. R
1
 ?? ? R
2
 ????? ? ??? ????? ? ???? ???? ? ???? ?? ????? ??? ??? ? ?? ??? ??
???? ??? ?? ?? ? ??? ? ?? ?:-
R
2
R
1
?
2 ? ?
1
(1) 
1 2 1 2
1 2 1 2
R R
(R R )( )
? ?
? ? ? ?
(2) 
1 1 2 2
1 2
R R
R R
? ? ?
?
(3) 
1 2 1 2
2 2
1 2
( )(R R )
R R
? ? ?
?
(4) 
1 2 2 1
1 2
R R
R R
? ? ?
?
09 99 D MD3 10 3 18 0 08
Target : Pre-Medical 2019/NEET-UG/21-10-2018
LTS - 4/ 31
20. A black body radiates heat energy at the rate of
2 × 10
5
 J/sm
2
 at temp. of 127°C. The temp of black
body at which rate becomes 32 × 10
5
 J/s-m
2
 is :-
(1) 273°C (2) 527°C
(3) 873°C (4) 927°C
21. 2 mole of N
2
 gas at 27°C is mixed with 1 mole He
gas at –73°C. Find T
mix
 of the mixture :-
(1) 277°C (2) 277K (3) 5°K (4) 50°C
22. A sample of ideal gas ( ?=1.4) is heated at constant
pressure. If an 100 J is supplied to gas, the work
done by the gas is :-
(1) 42.12 J (2) 56.28 J
(3) 28.57 J (4) 36.23 J
23. Open container contains x mole of gas at T kelvin
If temperature is tripled, then the amount of gas
exit the container is :-
(1) 
x
3
(2) 3x (3) 
2x
3
(4) 
3x
2
24. Figure shows two rays A and B being reflected
by a mirror and going as A' and B'. The mirror :
A
B
A'
B'
(1) is plane
(2) is convex
(3) is concave
(4) may be any spherical mirror
25. A point object is placed at a distance of 30 cm
from a convex mirror of focal length 30 cm. The
image will form at :-
(1) infinity (2) pole
(3) focus
(4) 15 cm behind the mirror
26. Locate the image formed by refraction in the
situation shown in figure :-
S
?=1.0
25cm
20cm
C
?=1.5
(1) 100 cm left (2) infinity
(3) 1 cm to the right (4) 18 cm to the left
20. ????????????127°C ???????2 × 10
5
 J/sm
2
 
????? ? ????
???? ? ?????? ?? ?? ? ???? ?? ?? ?? ??? ??? ? ? ?? ?? ?? ???? ??? ??
32 × 10
5
 J/s-m
2
 ?? ?? ? ?? ??? ?:-
(1) 273°C (2) 527°C
(3) 873°C (4) 927°C
21. 27ºC ?? ?N
2
 ? ??2 ? ?? ?? ?–73°C ?? ?He ?? ?1 ? ?? ? ? ? ? ?? ?? ? ?? ?
????? ?? ?? ????? ? ???T
min 
? ??? ? ? ?? ???? ?
(1) 277°C (2) 277K (3) 5°K (4) 50°C
22. ????? ?? ??? ( ?=1.4) ??? ?? ?? ?? ?? ??? ? ?? ? ? ?? ?? ?? ????? ? ???
?? ?? ???? ??? ? ??? 100 J ?? ? ??? ?? ??? ????? ?? ?? ???? ?? ?? ?? ??
?? ??? ???? ????? ?? ? ?
(1) 42.12 J (2) 56.28 J
(3) 28.57 J (4) 36.23 J
23. ??? ??????? ?? x ???? ? ??? T ???? ? ?? ?? ?? ????????3 ?? ? ?? ??
???? ? ????? ???? ?? ?? ??? ? ??? ?? ?? ??? ??? ? ??? ?? ???? ??? ???
??? ?? :-
(1) 
x
3
(2) 3x (3) 
2x
3
(4) 
3x
2
24. ?? ?? ? ?? ? ?? ????? ? ?? ??? ?? ??? ? ??? ? ??? ?A ?? ?? ?B ?? ???? ?? ? ?? ?? ?? ?? ??
????? ??A' ?????B' ??? ???????? ????? ?? ?? ???? ????? ? ??????:
A
B
A'
B'
(1) ?? ??
(2) ?? ??
(3) ? ?? ?
(4) ????? ? ?????? ??? ?? ????? ?? ??? ?????? ?
25. 30 cm ?????? ????? ????? ?? ?? ? ????? ? ???30 cm ?? ? ????? ??
??? ?? ?? ????? ?? ??? ???? ? ????? ?? ?? ???? ??? ?????? ??????:-
(1) ??? ?? ?? (2) ???? ?? ??
(3) ?????? ??
(4) ????? ? ???15 cm ????
26. ???? ?? ???? ??????? ????? ?? ??? ?? ?????? ????? ???????? ??? ?????
?? ? ????? ?? ?????? ???? ?? ?????:-
S
?=1.0
25cm
20cm
C
?=1.5
(1) 100 cm ?? ?? ?? ???? (2) ??? ?
(3) 1 cm ????? ? ???? (4) 18 cm ?? ?? ?? ????
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