Practical Physics - 1 Practice Questions - DPP for NEET

 Page 1


DIRECTIONS (Q.1-Q.24) : There are 24 multiple choice
questions. Each question has 4 choices (a), (b), (c) and (d), out
of which ONLY ONE choice is correct.
Q.1 One cm on the main scale of a vernier callipers is divided
into ten equal parts. If 20 divisions of vernier scale coincide
with 8 small divisions of the main scale. What will be the
least count of callipers ?
(a) 0.05 cm (b) 0.06 cm
(c) 0.04 cm (d) 0.01 cm
Q.2 The shape of stress vs strain graph within elastic limit is :
(a) parabolic (b) curve line
(c) straight line (d) ellipse
Q.3 In a vernier calliper N divisions of vernier scale coincides
with N – 1 divisions of main scale (in which length of one
division is 1 mm). The least count of the instrument should
be
(a)N (b) N – 1 (c) 1/10 N (d) 1/N – 1
Q.4 The figure shows a situation when the jaws of vernier are
touching each other. Each main scale division is of 1 mm.
Find zero correction.
(a) – 0.5 mm
(b) + 0.5 mm
0            1            2(cm)
0 5 10
V ernier
scale
main
scale
(c) – 0.4 mm
(d) + 0.4 mm
Q.5 In an experiment for measurement of young’s modulus,
following readings are taken. Load = 3.00 kg, length =
2.820 m, diameter = 0.041 cm and extension = 0.87.
Determine the percentage error in the measurement of Y.
(a) 5% ± (b) 6.5% ±
(c) 5.5% ± (d) 15% ±
Page 2


DIRECTIONS (Q.1-Q.24) : There are 24 multiple choice
questions. Each question has 4 choices (a), (b), (c) and (d), out
of which ONLY ONE choice is correct.
Q.1 One cm on the main scale of a vernier callipers is divided
into ten equal parts. If 20 divisions of vernier scale coincide
with 8 small divisions of the main scale. What will be the
least count of callipers ?
(a) 0.05 cm (b) 0.06 cm
(c) 0.04 cm (d) 0.01 cm
Q.2 The shape of stress vs strain graph within elastic limit is :
(a) parabolic (b) curve line
(c) straight line (d) ellipse
Q.3 In a vernier calliper N divisions of vernier scale coincides
with N – 1 divisions of main scale (in which length of one
division is 1 mm). The least count of the instrument should
be
(a)N (b) N – 1 (c) 1/10 N (d) 1/N – 1
Q.4 The figure shows a situation when the jaws of vernier are
touching each other. Each main scale division is of 1 mm.
Find zero correction.
(a) – 0.5 mm
(b) + 0.5 mm
0            1            2(cm)
0 5 10
V ernier
scale
main
scale
(c) – 0.4 mm
(d) + 0.4 mm
Q.5 In an experiment for measurement of young’s modulus,
following readings are taken. Load = 3.00 kg, length =
2.820 m, diameter = 0.041 cm and extension = 0.87.
Determine the percentage error in the measurement of Y.
(a) 5% ± (b) 6.5% ±
(c) 5.5% ± (d) 15% ±
2
DPP/ P 31
Q.6 When the zero of the circular scale of a screw gauge
coincides with the zero of the main scale before A and B
come in contact then the instrument has
(a) positive zero error
(b) negative zero error
(c) no zero error
A B
(d) can't be said anything
Q.7 If h be the elevation or depression of a spherical surface
from the plane glass plate and c be the mean distance
between two consecutive points corresponding to the
impressions made by the three legs of a spherometer then
the radius of curvature is
(a)
2
62
-
ch
h
(b)
22
62
+
ch
h
(c)
2
62
+
ch
h
(d)
2
2
6
c
hh
+
Q.8 The least count of a spherometer is given by
(a) pitch × no. of circular divisions
(b)
pitch
no. of circular divisions
(c)
no. of circular divisions
pitch
(d)    
pitch
mean distance between two consecutive legs of the spherometer
Q.9 The specific heat of a solid is determined by the method
known as
(a) the method of fusion
(b) the method of mixture
(c) the method of vaporisation
(d) the method of cooling
Q.10 Which principle is involved in the experiment to determine
the specific heat of a liquid by the method of mixture ?
(a) Heat gained by solid = Heat lost by calorimeter and
liquid.
(b) Heat lost by solid = Heat gained by calorimeter and
liquid.
(c) Heat lost by solid and liquid = Heat gained by
calorimeter.
(d) Heat gained by solid and calorimeter = Heat lost by
liquid.
Q.11 Two full turns of the circular scale of a screw gauge cover
a distance of 1mm on its main scale. The total number of
divisions on the circular scale is 50. Further, it is found
that the screw gauge has a zero error of – 0.03 mm. While
measuring the diameter of a thin wire,  a student notes the
main scale reading of 3 mm and the number of circular
scale divisions in line with the main scale as 35. The
diameter of the wire is
(a) 3.32 mm (b) 3.73 mm
(c) 3.67 mm (d) 3.38 mm
Q.12 In an experiment the angles are required to be measured
using an instrument, 29 divisions of the main scale exactly
coincide with the 30 divisions of the vernier scale. If the
smallest division of the main scale is half- a degree (=
0.5°), then the least count of the instrument is :
(a) ha lf m inu te (b) one degree
(c) half degree (d) one minute
Q.13In a screw gauge, the zero of main scale coincides with
fifth division of circular scale in figure (i). The circular
divisions of screw gauge are 50. It moves 0.5 mm on main
scale in one rotation. The diameter of the ball in figure (ii)
is
10
5
0
0
Figure (i)
  
30
25
20
0
Figure (ii)
(a) 2 .2 5 m m (b) 2.20 mm
(c) 1.20 mm (d) 1.25 mm
Q.14A student performs an experiment for determination of
2
2
4
g
T
æö
p
=
ç÷
èø
l
. The error in length l is Dl and in time T is DT
and n is number of times the reading is taken. The
measurement of g is most accurate for
  Dl   D T n
(a) 5 mm 0.2 sec 10
(b) 5 mm 0.2 sec 20
(c) 5 mm 0.1 sec 10
(d) 1 mm 0.1 sec 50
Page 3


DIRECTIONS (Q.1-Q.24) : There are 24 multiple choice
questions. Each question has 4 choices (a), (b), (c) and (d), out
of which ONLY ONE choice is correct.
Q.1 One cm on the main scale of a vernier callipers is divided
into ten equal parts. If 20 divisions of vernier scale coincide
with 8 small divisions of the main scale. What will be the
least count of callipers ?
(a) 0.05 cm (b) 0.06 cm
(c) 0.04 cm (d) 0.01 cm
Q.2 The shape of stress vs strain graph within elastic limit is :
(a) parabolic (b) curve line
(c) straight line (d) ellipse
Q.3 In a vernier calliper N divisions of vernier scale coincides
with N – 1 divisions of main scale (in which length of one
division is 1 mm). The least count of the instrument should
be
(a)N (b) N – 1 (c) 1/10 N (d) 1/N – 1
Q.4 The figure shows a situation when the jaws of vernier are
touching each other. Each main scale division is of 1 mm.
Find zero correction.
(a) – 0.5 mm
(b) + 0.5 mm
0            1            2(cm)
0 5 10
V ernier
scale
main
scale
(c) – 0.4 mm
(d) + 0.4 mm
Q.5 In an experiment for measurement of young’s modulus,
following readings are taken. Load = 3.00 kg, length =
2.820 m, diameter = 0.041 cm and extension = 0.87.
Determine the percentage error in the measurement of Y.
(a) 5% ± (b) 6.5% ±
(c) 5.5% ± (d) 15% ±
2
DPP/ P 31
Q.6 When the zero of the circular scale of a screw gauge
coincides with the zero of the main scale before A and B
come in contact then the instrument has
(a) positive zero error
(b) negative zero error
(c) no zero error
A B
(d) can't be said anything
Q.7 If h be the elevation or depression of a spherical surface
from the plane glass plate and c be the mean distance
between two consecutive points corresponding to the
impressions made by the three legs of a spherometer then
the radius of curvature is
(a)
2
62
-
ch
h
(b)
22
62
+
ch
h
(c)
2
62
+
ch
h
(d)
2
2
6
c
hh
+
Q.8 The least count of a spherometer is given by
(a) pitch × no. of circular divisions
(b)
pitch
no. of circular divisions
(c)
no. of circular divisions
pitch
(d)    
pitch
mean distance between two consecutive legs of the spherometer
Q.9 The specific heat of a solid is determined by the method
known as
(a) the method of fusion
(b) the method of mixture
(c) the method of vaporisation
(d) the method of cooling
Q.10 Which principle is involved in the experiment to determine
the specific heat of a liquid by the method of mixture ?
(a) Heat gained by solid = Heat lost by calorimeter and
liquid.
(b) Heat lost by solid = Heat gained by calorimeter and
liquid.
(c) Heat lost by solid and liquid = Heat gained by
calorimeter.
(d) Heat gained by solid and calorimeter = Heat lost by
liquid.
Q.11 Two full turns of the circular scale of a screw gauge cover
a distance of 1mm on its main scale. The total number of
divisions on the circular scale is 50. Further, it is found
that the screw gauge has a zero error of – 0.03 mm. While
measuring the diameter of a thin wire,  a student notes the
main scale reading of 3 mm and the number of circular
scale divisions in line with the main scale as 35. The
diameter of the wire is
(a) 3.32 mm (b) 3.73 mm
(c) 3.67 mm (d) 3.38 mm
Q.12 In an experiment the angles are required to be measured
using an instrument, 29 divisions of the main scale exactly
coincide with the 30 divisions of the vernier scale. If the
smallest division of the main scale is half- a degree (=
0.5°), then the least count of the instrument is :
(a) ha lf m inu te (b) one degree
(c) half degree (d) one minute
Q.13In a screw gauge, the zero of main scale coincides with
fifth division of circular scale in figure (i). The circular
divisions of screw gauge are 50. It moves 0.5 mm on main
scale in one rotation. The diameter of the ball in figure (ii)
is
10
5
0
0
Figure (i)
  
30
25
20
0
Figure (ii)
(a) 2 .2 5 m m (b) 2.20 mm
(c) 1.20 mm (d) 1.25 mm
Q.14A student performs an experiment for determination of
2
2
4
g
T
æö
p
=
ç÷
èø
l
. The error in length l is Dl and in time T is DT
and n is number of times the reading is taken. The
measurement of g is most accurate for
  Dl   D T n
(a) 5 mm 0.2 sec 10
(b) 5 mm 0.2 sec 20
(c) 5 mm 0.1 sec 10
(d) 1 mm 0.1 sec 50
DPP/ P 31
3
Q.15 A student performs an experiment to determine the Y oung’s
modulus of a wire, exactly 2 m long, by Searle’s method. In
a particular reading, the student measures the extension in
the length of the wire to be 0.8 mm with an uncertainty of ±
0.05 mm at a load of exactly 1.0 kg. The student also
measures the diameter of the wire to be 0.4 mm with an
uncertainty of ± 0.01 mm. Take g = 9.8 m/s
2
 (exact). The
Young’s modulus obtained from the reading is
(a) (2.0±0.3)×10
11
 N/m
2
(b) (2.0 ± 0.2) × 10
11
 N/m
2
(c) (2.0±0.1)×10
11
 N/m
2
(d) (2.0 ± 0.05) × 10
11
 N/m
2
Q.16 Students I, II and III perform an experiment for measuring
the acceleration due to gravity (g) using a simple pendulum.
They use different lengths of the pendulum and /or record
time for different number of oscillations. The observations
are shown in the table.
Least count for length = 0.1 cm
Least count for time = 0.1 s
Student Length of the 
pendulum (cm)
No. of 
oscillations 
(n)
Total time for 
(n) oscillations 
(s)
Time 
period (s)
   I 64.0 8 128.0 16.0
  II 64.0 4 64.0 16.0
 III 20.0 4 36.0 9.0
If E
I
, E
II
 and E
III
 are the percentage errors in g, i.e.,
100
g
g
æö D
´
ç÷
èø
 for students I, II and III, respectively, then
(a) E
I
 = 0 (b) E
I
 is minimum
(c) E
I
 = E
II
(d) E
II
 is maximum
Q.17If the terminal speed of a sphere of gold (density
= 19.5 kg/m
3
) is 0.2 m/s in a viscous liquid (density = 1.5
kg/m
3
), find the terminal speed of a sphere of silver
(density = 10.5 kg/m
3
) of the same size in the same liquid
(a) 0.4 m/s (b) 0.133 m/s
(c) 0.1 m/s (d) 0.2 m/s
Q.18 A spherical solid ball of volume V is made of a material of
density r
1
. It is falling through a liquid of density r
2 
(r
2
<
r
1
). Assume that the liquid applies a viscous force on the
ball that is proportional to the square of its speed v, i.e.,
F
viscous
 = –kv
2
 (k > 0). The terminal speed of the ball is
(a)
12
( –) Vg
k
rr
(b)
1
Vg
k
r
(c)
1
Vg
k
r
(d)
12
( –) Vg
k
rr
Q.19 A jar is f illed w ith tw o non-mixing liquids 1 a nd 2 having de nsities
r
1 
and, r
2 
respectively . A solid ball, made of a material of density
r
3 
, is dropped in the jar. It comes to equilibrium in  the position
shown in the figure.Which of the following is true for r
1
, r
2
and
r
3
?
(a) r
3 
< r
1 
 < r
2
(b)   r
1 
> r
3 
 > r
2
r 1
r 3
(c) r
1 
< r
2 
 < r
3
(d)   r
1 
< r
3 
 < r
2
Q.20 A capillary tube (A) is dipped in water. Another identical
tube (B) is dipped in a soap-water solution. Which of the
following shows the relative nature of the liquid columns
in the two tubes?
(a)  
A B
(b)  
A B
(c)  
A B
(d)  
A B
Q.21 Two wires are made of the same material and have the same
volume. However wire 1 has cross-sectional area A and
wire 2 has cross-sectional area 3A. If the length of wire 1
increases by Dx on applying force F, how much force is
needed to stretch wire 2 by the same amount of energy?
(a) 4 F (b) 6 F (c) 9 F (d) 1 F
Q.22 The vernier constant of two vernier callipers A and B are
0.01 cm and 0.01 mm respectively . Which one can measure
the length of an object more accurately?
(a) V ernier A (b) Vernier B
(c) Accuracy in measurement does not depend on vernier
constant
(d) Both A and B are equally accurate.
Page 4


DIRECTIONS (Q.1-Q.24) : There are 24 multiple choice
questions. Each question has 4 choices (a), (b), (c) and (d), out
of which ONLY ONE choice is correct.
Q.1 One cm on the main scale of a vernier callipers is divided
into ten equal parts. If 20 divisions of vernier scale coincide
with 8 small divisions of the main scale. What will be the
least count of callipers ?
(a) 0.05 cm (b) 0.06 cm
(c) 0.04 cm (d) 0.01 cm
Q.2 The shape of stress vs strain graph within elastic limit is :
(a) parabolic (b) curve line
(c) straight line (d) ellipse
Q.3 In a vernier calliper N divisions of vernier scale coincides
with N – 1 divisions of main scale (in which length of one
division is 1 mm). The least count of the instrument should
be
(a)N (b) N – 1 (c) 1/10 N (d) 1/N – 1
Q.4 The figure shows a situation when the jaws of vernier are
touching each other. Each main scale division is of 1 mm.
Find zero correction.
(a) – 0.5 mm
(b) + 0.5 mm
0            1            2(cm)
0 5 10
V ernier
scale
main
scale
(c) – 0.4 mm
(d) + 0.4 mm
Q.5 In an experiment for measurement of young’s modulus,
following readings are taken. Load = 3.00 kg, length =
2.820 m, diameter = 0.041 cm and extension = 0.87.
Determine the percentage error in the measurement of Y.
(a) 5% ± (b) 6.5% ±
(c) 5.5% ± (d) 15% ±
2
DPP/ P 31
Q.6 When the zero of the circular scale of a screw gauge
coincides with the zero of the main scale before A and B
come in contact then the instrument has
(a) positive zero error
(b) negative zero error
(c) no zero error
A B
(d) can't be said anything
Q.7 If h be the elevation or depression of a spherical surface
from the plane glass plate and c be the mean distance
between two consecutive points corresponding to the
impressions made by the three legs of a spherometer then
the radius of curvature is
(a)
2
62
-
ch
h
(b)
22
62
+
ch
h
(c)
2
62
+
ch
h
(d)
2
2
6
c
hh
+
Q.8 The least count of a spherometer is given by
(a) pitch × no. of circular divisions
(b)
pitch
no. of circular divisions
(c)
no. of circular divisions
pitch
(d)    
pitch
mean distance between two consecutive legs of the spherometer
Q.9 The specific heat of a solid is determined by the method
known as
(a) the method of fusion
(b) the method of mixture
(c) the method of vaporisation
(d) the method of cooling
Q.10 Which principle is involved in the experiment to determine
the specific heat of a liquid by the method of mixture ?
(a) Heat gained by solid = Heat lost by calorimeter and
liquid.
(b) Heat lost by solid = Heat gained by calorimeter and
liquid.
(c) Heat lost by solid and liquid = Heat gained by
calorimeter.
(d) Heat gained by solid and calorimeter = Heat lost by
liquid.
Q.11 Two full turns of the circular scale of a screw gauge cover
a distance of 1mm on its main scale. The total number of
divisions on the circular scale is 50. Further, it is found
that the screw gauge has a zero error of – 0.03 mm. While
measuring the diameter of a thin wire,  a student notes the
main scale reading of 3 mm and the number of circular
scale divisions in line with the main scale as 35. The
diameter of the wire is
(a) 3.32 mm (b) 3.73 mm
(c) 3.67 mm (d) 3.38 mm
Q.12 In an experiment the angles are required to be measured
using an instrument, 29 divisions of the main scale exactly
coincide with the 30 divisions of the vernier scale. If the
smallest division of the main scale is half- a degree (=
0.5°), then the least count of the instrument is :
(a) ha lf m inu te (b) one degree
(c) half degree (d) one minute
Q.13In a screw gauge, the zero of main scale coincides with
fifth division of circular scale in figure (i). The circular
divisions of screw gauge are 50. It moves 0.5 mm on main
scale in one rotation. The diameter of the ball in figure (ii)
is
10
5
0
0
Figure (i)
  
30
25
20
0
Figure (ii)
(a) 2 .2 5 m m (b) 2.20 mm
(c) 1.20 mm (d) 1.25 mm
Q.14A student performs an experiment for determination of
2
2
4
g
T
æö
p
=
ç÷
èø
l
. The error in length l is Dl and in time T is DT
and n is number of times the reading is taken. The
measurement of g is most accurate for
  Dl   D T n
(a) 5 mm 0.2 sec 10
(b) 5 mm 0.2 sec 20
(c) 5 mm 0.1 sec 10
(d) 1 mm 0.1 sec 50
DPP/ P 31
3
Q.15 A student performs an experiment to determine the Y oung’s
modulus of a wire, exactly 2 m long, by Searle’s method. In
a particular reading, the student measures the extension in
the length of the wire to be 0.8 mm with an uncertainty of ±
0.05 mm at a load of exactly 1.0 kg. The student also
measures the diameter of the wire to be 0.4 mm with an
uncertainty of ± 0.01 mm. Take g = 9.8 m/s
2
 (exact). The
Young’s modulus obtained from the reading is
(a) (2.0±0.3)×10
11
 N/m
2
(b) (2.0 ± 0.2) × 10
11
 N/m
2
(c) (2.0±0.1)×10
11
 N/m
2
(d) (2.0 ± 0.05) × 10
11
 N/m
2
Q.16 Students I, II and III perform an experiment for measuring
the acceleration due to gravity (g) using a simple pendulum.
They use different lengths of the pendulum and /or record
time for different number of oscillations. The observations
are shown in the table.
Least count for length = 0.1 cm
Least count for time = 0.1 s
Student Length of the 
pendulum (cm)
No. of 
oscillations 
(n)
Total time for 
(n) oscillations 
(s)
Time 
period (s)
   I 64.0 8 128.0 16.0
  II 64.0 4 64.0 16.0
 III 20.0 4 36.0 9.0
If E
I
, E
II
 and E
III
 are the percentage errors in g, i.e.,
100
g
g
æö D
´
ç÷
èø
 for students I, II and III, respectively, then
(a) E
I
 = 0 (b) E
I
 is minimum
(c) E
I
 = E
II
(d) E
II
 is maximum
Q.17If the terminal speed of a sphere of gold (density
= 19.5 kg/m
3
) is 0.2 m/s in a viscous liquid (density = 1.5
kg/m
3
), find the terminal speed of a sphere of silver
(density = 10.5 kg/m
3
) of the same size in the same liquid
(a) 0.4 m/s (b) 0.133 m/s
(c) 0.1 m/s (d) 0.2 m/s
Q.18 A spherical solid ball of volume V is made of a material of
density r
1
. It is falling through a liquid of density r
2 
(r
2
<
r
1
). Assume that the liquid applies a viscous force on the
ball that is proportional to the square of its speed v, i.e.,
F
viscous
 = –kv
2
 (k > 0). The terminal speed of the ball is
(a)
12
( –) Vg
k
rr
(b)
1
Vg
k
r
(c)
1
Vg
k
r
(d)
12
( –) Vg
k
rr
Q.19 A jar is f illed w ith tw o non-mixing liquids 1 a nd 2 having de nsities
r
1 
and, r
2 
respectively . A solid ball, made of a material of density
r
3 
, is dropped in the jar. It comes to equilibrium in  the position
shown in the figure.Which of the following is true for r
1
, r
2
and
r
3
?
(a) r
3 
< r
1 
 < r
2
(b)   r
1 
> r
3 
 > r
2
r 1
r 3
(c) r
1 
< r
2 
 < r
3
(d)   r
1 
< r
3 
 < r
2
Q.20 A capillary tube (A) is dipped in water. Another identical
tube (B) is dipped in a soap-water solution. Which of the
following shows the relative nature of the liquid columns
in the two tubes?
(a)  
A B
(b)  
A B
(c)  
A B
(d)  
A B
Q.21 Two wires are made of the same material and have the same
volume. However wire 1 has cross-sectional area A and
wire 2 has cross-sectional area 3A. If the length of wire 1
increases by Dx on applying force F, how much force is
needed to stretch wire 2 by the same amount of energy?
(a) 4 F (b) 6 F (c) 9 F (d) 1 F
Q.22 The vernier constant of two vernier callipers A and B are
0.01 cm and 0.01 mm respectively . Which one can measure
the length of an object more accurately?
(a) V ernier A (b) Vernier B
(c) Accuracy in measurement does not depend on vernier
constant
(d) Both A and B are equally accurate.
4
DPP/ P 31
Q.23 The acceleration due to gravity at a place can be determined
with the help of a simple pendulum. For this purpose
effective length of the pendulum is considered. If 'l' be
the length of the string and 'd' the diameter of the bob then
the effective length is equal to
(a) l + d (b)
2
+ l
d
(c)
2
- l
d
(d) l – d
Q.24 If x, y , p and q represent the increase in length, the original
length of the experimental wire, load applied to the wire
and area of cross-section of the wire respectively then
Young's modulus of the wire is given by
(a)
xy
pq
 (b)
xp
yq
(c)
py
xq
(d)
pq
xy
DIRECTIONS (Q.25-Q.27) : In the following questions,
more than one of the answers  given are correct. Select the
correct answers and mark it according to the following
codes:
Codes :
(a) 1, 2 and 3 are correct (b) 1 and 2 are correct
(c) 2 and 4 are correct (d) 1 and 3 are correct
Q.25 What is the function of a screw gauge in the experiment of
determining Young's modulus of a wire ?
(1) It measures the extension in the wire.
(2) It measures the load applied.
(3) It measures the length of the wire.
(4) It measures the diameter of the wire.
Q.26Consider the following statements regarding the
experiment to determine the surface tension of water by
capillary rise method. Choose the correct statements.
(1) Capillary tube should be clean and liquid should be
free from dirt and grease.
(2) Distilled water should be avoided.
(3) Distilled water should be added.
(4) Dirty liquid should be used.
Q.27 The temperature-time variation graphs, as obtained by four
students 1, 2, 3 and 4 are as shown. The graphs, likely to be
wrong are
 
0 5 10 10 20 25 30 35
30
40
50
60
70
80
Temperature
Time
(1)
 
0 5 10 10 20 25 30 35
30
40
50
60
70
80
Temperature
Time
(2)
 
0 5 10 10 20 25 30 35
30
40
50
60
70
80
Temperature
Time
(3)
     
0 5 10 10 20 25 30 35
30
40
50
60
70
80
Temperature
Time
(4)
DIRECTIONS (Q.28-Q.30) : Read the passage given below
and answer the questions that follows :
The internal radius of a 1m long resonance tube is measured as
3 cm. A tuning fork of frequency 2000 Hz is used. The first
resonating length is measured as 4.6 cm and the second
resonating length is measured as 14.0 cm.
Q.28 Calculate the maximum percentage error in measurement
of e.
(a) 3.33% (b) 2.23% (c) 4.33% (d) 5.33%
Q.29 Calculate the speed of sound at the room temperature.
(a) 275 m/s (b) 376 m/s (c) 356 m/s (d) 330 m/s
Q.30 Calculate the end correction.
(a) 0.2 cm (b) 0.3 cm (c) 0.1 cm (d) 0.4 cm