AIIMS Entrance Exam Solved Paper-2020 | AIIMS Mock Tests & Previous Year Question Papers - NEET PDF Download

 Page 1


1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 10
21
. The average 
drift speed of the electrons is 0.25 mm/s. The current flowing is:  
A. 0.8 A B. 8 A C. 80 A  D. 5 A  
 
2. Which of the following cells is more likely to be damaged due to short circuiting?  
A. Daniel B. Dry C. Acid D. Fuel  
 
3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m
2
. The work done is  
A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 
 
4. The Helium nuclei can be formed from  
A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission 
C. Hydrogen nuclei through nuclear fusion D. None of these  
 
5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material 
used was  
A. Helium 4 B. Plutonium 239  C. Uranium 235 D. Uranium 233  
 
6. The engine of a truck moving a straight road delivers constant power. The distance travelled 
by the truck in time t is proportional to 
A. t B. t
 2
 C. vt D. t
 3/2
 
7. The velocity of electron in ground state of 
hydrogen atom is 
A. 2 x 10
5
 
m/s 
B. 2 x 10
6
 
m/s  
C. 2 x 10
7
 
m/s 
D. 2 x 10
8
 
m/s  
 
8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 10
-11
 m; then the radius 
of the second orbit must be 
A. 15.9 x 10
-11
 m B. 10.6 x 10 m C. 21.2 x 10
-11
 m D. 42.4 x 10
-11
 m  
 
9. A person pushes a rock of 10
10
Kg mass by applying a force of only 10N for just 4 seconds. 
The work done is  
A. 1000 Joule  B. 0 J  C. nearly zero D. positive 
 
10. One can take pictures of objects which are completely invisible to the eye using camera films 
which are sensitive to  
A. ultra-violet rays B. sodium light  C. visible light D. infra-red rays  
 
11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing 
sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, 
we will observe  
A. D
1
 and D
2
 lines of sodium with good 
intensity  
B. dark lines where D
1
 and D
2
 lines should have 
been observed 
C. continuous radiation from the bulb only D. the entire emission spectrum of sodium  
 
 
   
 
Page 2


1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 10
21
. The average 
drift speed of the electrons is 0.25 mm/s. The current flowing is:  
A. 0.8 A B. 8 A C. 80 A  D. 5 A  
 
2. Which of the following cells is more likely to be damaged due to short circuiting?  
A. Daniel B. Dry C. Acid D. Fuel  
 
3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m
2
. The work done is  
A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 
 
4. The Helium nuclei can be formed from  
A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission 
C. Hydrogen nuclei through nuclear fusion D. None of these  
 
5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material 
used was  
A. Helium 4 B. Plutonium 239  C. Uranium 235 D. Uranium 233  
 
6. The engine of a truck moving a straight road delivers constant power. The distance travelled 
by the truck in time t is proportional to 
A. t B. t
 2
 C. vt D. t
 3/2
 
7. The velocity of electron in ground state of 
hydrogen atom is 
A. 2 x 10
5
 
m/s 
B. 2 x 10
6
 
m/s  
C. 2 x 10
7
 
m/s 
D. 2 x 10
8
 
m/s  
 
8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 10
-11
 m; then the radius 
of the second orbit must be 
A. 15.9 x 10
-11
 m B. 10.6 x 10 m C. 21.2 x 10
-11
 m D. 42.4 x 10
-11
 m  
 
9. A person pushes a rock of 10
10
Kg mass by applying a force of only 10N for just 4 seconds. 
The work done is  
A. 1000 Joule  B. 0 J  C. nearly zero D. positive 
 
10. One can take pictures of objects which are completely invisible to the eye using camera films 
which are sensitive to  
A. ultra-violet rays B. sodium light  C. visible light D. infra-red rays  
 
11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing 
sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, 
we will observe  
A. D
1
 and D
2
 lines of sodium with good 
intensity  
B. dark lines where D
1
 and D
2
 lines should have 
been observed 
C. continuous radiation from the bulb only D. the entire emission spectrum of sodium  
 
 
   
 
12. Under the action of a constant force, a 
particle is experiencing a constant acceleration. 
The power is 
A. zero B. positive 
C. negative D. increasing uniformly 
with time 
13. If in a plane convex lens the radius of curvature of the convex surface is 10 cm and the focal 
length of the lens is 30 cm, the refractive index of the material of the lens will be  
A. 1.5  B. 1.66  C. 1.33 D. 3  
14. A plane convex lens has radius of curvature 30 cm. If the refractive index is 1.33, the focal 
length of lens is  
A. 10 cm B. 90 cm C. 30 cm D. 60 cm  
 
15. A beam of light is converging towards a point I on a screen. A plane parallel plate of glass 
(thickness in the direction of the beam = t, refractive index = µ ) is introduced in the path of the 
beam. The convergence point is shifted by  
A. t (µ - 1) away  B. t (1 + 1/µ ) away C. t (1 - 1/µ ) nearer D. t (1 + 1/µ ) nearer  
 
16 . In Young's double silt experiment the separation between the silts is halved and the distance 
between the silts and screen is doubled. The fringe width will be  
A. unchanged B. halved  C. doubled D. quadrupled  
 
17. Wavelength of red light is ? 
r
, violet rays is ? 
v
 and X -ray is ? 
x
 then the order of 
wavelengths is  
A. ? 
x
 >? 
v
 >? 
r
 B. ? 
v
 >? 
x
 >? 
r
 C. ? 
r
 >? 
x
 >? 
v
 D. ? 
r
 >? 
v
 >?  
18. The amount of work done by the labourer 
who carries n bricks, each of mass m, to the roof 
of a house whose height is h is 
A. n mgh B. mgh/n C. zero D. ghn/m 
 
19. In LCR circuit in the state of resonance, which of the following statements is correct ? (cos 
f)=  
A. 0  B. 0.5 C. 1 D. None of these  
 
20. In LCR circuit, phase difference between voltage and current cannot be 
A. 80° B. 90°  C. 145° D. 0°  
 
21. If speed is plotted along x-axis and Kinetic energy against y-axis, then the graph obtained has 
a shape similar to that of 
A. circle B. ellipse C. hyperbola D. parabola 
 
22. A magnetic needle lying parallel to a magnetic field requires w units of work to turn it 
through 60°. The torque needed to maintain the needle in this position will be  
A. (v 3) w B. w 
 
 
   
 
Page 3


1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 10
21
. The average 
drift speed of the electrons is 0.25 mm/s. The current flowing is:  
A. 0.8 A B. 8 A C. 80 A  D. 5 A  
 
2. Which of the following cells is more likely to be damaged due to short circuiting?  
A. Daniel B. Dry C. Acid D. Fuel  
 
3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m
2
. The work done is  
A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 
 
4. The Helium nuclei can be formed from  
A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission 
C. Hydrogen nuclei through nuclear fusion D. None of these  
 
5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material 
used was  
A. Helium 4 B. Plutonium 239  C. Uranium 235 D. Uranium 233  
 
6. The engine of a truck moving a straight road delivers constant power. The distance travelled 
by the truck in time t is proportional to 
A. t B. t
 2
 C. vt D. t
 3/2
 
7. The velocity of electron in ground state of 
hydrogen atom is 
A. 2 x 10
5
 
m/s 
B. 2 x 10
6
 
m/s  
C. 2 x 10
7
 
m/s 
D. 2 x 10
8
 
m/s  
 
8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 10
-11
 m; then the radius 
of the second orbit must be 
A. 15.9 x 10
-11
 m B. 10.6 x 10 m C. 21.2 x 10
-11
 m D. 42.4 x 10
-11
 m  
 
9. A person pushes a rock of 10
10
Kg mass by applying a force of only 10N for just 4 seconds. 
The work done is  
A. 1000 Joule  B. 0 J  C. nearly zero D. positive 
 
10. One can take pictures of objects which are completely invisible to the eye using camera films 
which are sensitive to  
A. ultra-violet rays B. sodium light  C. visible light D. infra-red rays  
 
11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing 
sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, 
we will observe  
A. D
1
 and D
2
 lines of sodium with good 
intensity  
B. dark lines where D
1
 and D
2
 lines should have 
been observed 
C. continuous radiation from the bulb only D. the entire emission spectrum of sodium  
 
 
   
 
12. Under the action of a constant force, a 
particle is experiencing a constant acceleration. 
The power is 
A. zero B. positive 
C. negative D. increasing uniformly 
with time 
13. If in a plane convex lens the radius of curvature of the convex surface is 10 cm and the focal 
length of the lens is 30 cm, the refractive index of the material of the lens will be  
A. 1.5  B. 1.66  C. 1.33 D. 3  
14. A plane convex lens has radius of curvature 30 cm. If the refractive index is 1.33, the focal 
length of lens is  
A. 10 cm B. 90 cm C. 30 cm D. 60 cm  
 
15. A beam of light is converging towards a point I on a screen. A plane parallel plate of glass 
(thickness in the direction of the beam = t, refractive index = µ ) is introduced in the path of the 
beam. The convergence point is shifted by  
A. t (µ - 1) away  B. t (1 + 1/µ ) away C. t (1 - 1/µ ) nearer D. t (1 + 1/µ ) nearer  
 
16 . In Young's double silt experiment the separation between the silts is halved and the distance 
between the silts and screen is doubled. The fringe width will be  
A. unchanged B. halved  C. doubled D. quadrupled  
 
17. Wavelength of red light is ? 
r
, violet rays is ? 
v
 and X -ray is ? 
x
 then the order of 
wavelengths is  
A. ? 
x
 >? 
v
 >? 
r
 B. ? 
v
 >? 
x
 >? 
r
 C. ? 
r
 >? 
x
 >? 
v
 D. ? 
r
 >? 
v
 >?  
18. The amount of work done by the labourer 
who carries n bricks, each of mass m, to the roof 
of a house whose height is h is 
A. n mgh B. mgh/n C. zero D. ghn/m 
 
19. In LCR circuit in the state of resonance, which of the following statements is correct ? (cos 
f)=  
A. 0  B. 0.5 C. 1 D. None of these  
 
20. In LCR circuit, phase difference between voltage and current cannot be 
A. 80° B. 90°  C. 145° D. 0°  
 
21. If speed is plotted along x-axis and Kinetic energy against y-axis, then the graph obtained has 
a shape similar to that of 
A. circle B. ellipse C. hyperbola D. parabola 
 
22. A magnetic needle lying parallel to a magnetic field requires w units of work to turn it 
through 60°. The torque needed to maintain the needle in this position will be  
A. (v 3) w B. w 
 
 
   
 
C. (v 3w)/2 D. 2w  
23. A vertical straight conductor carries a 
current vertically upwards. A point p lies to the 
east of it at a small distance and another point Q 
lies to west of it at the same distance. The 
magnetic field at p is 
A. greater than at Q  B. same as at Q  
C. less than at Q  
D. greater or less at Q 
depending upon the 
strength of the current  
 
24. In a parallel arrangement if (R
1
 > R
2
), the power dissipated in resistance R
1
 will be  
A. less than R
2
 B. same as R
2
 C. more than R
2
 D. none of these  
 
25. For a fuse wire to be installed in the supply line in a house which one of the following is 
immaterial ?  
A. the specific resistance of the material of the 
fuse wire  
B. the diameter of the fuse wire 
C. the length of the fuse wire D. none of these  
 
26. If V is voltage applied, E
a
 is emf drop across the armature, the armature current of a d.c. 
motor I
a
 is given by  
A. (V + E
a
)/R
a
 B. E
a
/R
a
 C. V- E
a
/R
a
 D. V/R
a
  
 
27. The current of 2.0 amperes passes through a cell of e.m.f. 1.5 volts having internal resistance 
of 0.15? . The potential difference measured in volts across both the terminals of the cell will be
A. 1.35 B. 1.50 C. 1.00 D. 1.20  
28. In this circuit, current ratio i
1
/i
2
 depends upon 
A. R
1
, R
2
 
and R 
B. R, R
1
, 
R
2
 and E 
C. R
1
 and 
R
2
 
D. E and R
 
29. A cell of emf E is connected across a resistance r. The potential difference between the 
terminals of the cell is found to be V. The internal resistance of the cell must be  
A. 2(E - V)V/r B. 2(E - V)r/E  C. (E - V) r/V D. (E- V)/r  
30. Copper and germanium are both cooled to 70 K from room temperature, then  
A. resistance of copper increases while that of 
germanium decreases 
B. resistance of copper decreases while that of 
germanium increases 
C. resistance of both decreases D. resistance of both increases  
 
31. The potential difference between the points A and B of the electrical circuit given is  
A. 1.5 V B. 1.0 V 
 
 
   
 
Page 4


1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 10
21
. The average 
drift speed of the electrons is 0.25 mm/s. The current flowing is:  
A. 0.8 A B. 8 A C. 80 A  D. 5 A  
 
2. Which of the following cells is more likely to be damaged due to short circuiting?  
A. Daniel B. Dry C. Acid D. Fuel  
 
3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m
2
. The work done is  
A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 
 
4. The Helium nuclei can be formed from  
A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission 
C. Hydrogen nuclei through nuclear fusion D. None of these  
 
5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material 
used was  
A. Helium 4 B. Plutonium 239  C. Uranium 235 D. Uranium 233  
 
6. The engine of a truck moving a straight road delivers constant power. The distance travelled 
by the truck in time t is proportional to 
A. t B. t
 2
 C. vt D. t
 3/2
 
7. The velocity of electron in ground state of 
hydrogen atom is 
A. 2 x 10
5
 
m/s 
B. 2 x 10
6
 
m/s  
C. 2 x 10
7
 
m/s 
D. 2 x 10
8
 
m/s  
 
8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 10
-11
 m; then the radius 
of the second orbit must be 
A. 15.9 x 10
-11
 m B. 10.6 x 10 m C. 21.2 x 10
-11
 m D. 42.4 x 10
-11
 m  
 
9. A person pushes a rock of 10
10
Kg mass by applying a force of only 10N for just 4 seconds. 
The work done is  
A. 1000 Joule  B. 0 J  C. nearly zero D. positive 
 
10. One can take pictures of objects which are completely invisible to the eye using camera films 
which are sensitive to  
A. ultra-violet rays B. sodium light  C. visible light D. infra-red rays  
 
11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing 
sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, 
we will observe  
A. D
1
 and D
2
 lines of sodium with good 
intensity  
B. dark lines where D
1
 and D
2
 lines should have 
been observed 
C. continuous radiation from the bulb only D. the entire emission spectrum of sodium  
 
 
   
 
12. Under the action of a constant force, a 
particle is experiencing a constant acceleration. 
The power is 
A. zero B. positive 
C. negative D. increasing uniformly 
with time 
13. If in a plane convex lens the radius of curvature of the convex surface is 10 cm and the focal 
length of the lens is 30 cm, the refractive index of the material of the lens will be  
A. 1.5  B. 1.66  C. 1.33 D. 3  
14. A plane convex lens has radius of curvature 30 cm. If the refractive index is 1.33, the focal 
length of lens is  
A. 10 cm B. 90 cm C. 30 cm D. 60 cm  
 
15. A beam of light is converging towards a point I on a screen. A plane parallel plate of glass 
(thickness in the direction of the beam = t, refractive index = µ ) is introduced in the path of the 
beam. The convergence point is shifted by  
A. t (µ - 1) away  B. t (1 + 1/µ ) away C. t (1 - 1/µ ) nearer D. t (1 + 1/µ ) nearer  
 
16 . In Young's double silt experiment the separation between the silts is halved and the distance 
between the silts and screen is doubled. The fringe width will be  
A. unchanged B. halved  C. doubled D. quadrupled  
 
17. Wavelength of red light is ? 
r
, violet rays is ? 
v
 and X -ray is ? 
x
 then the order of 
wavelengths is  
A. ? 
x
 >? 
v
 >? 
r
 B. ? 
v
 >? 
x
 >? 
r
 C. ? 
r
 >? 
x
 >? 
v
 D. ? 
r
 >? 
v
 >?  
18. The amount of work done by the labourer 
who carries n bricks, each of mass m, to the roof 
of a house whose height is h is 
A. n mgh B. mgh/n C. zero D. ghn/m 
 
19. In LCR circuit in the state of resonance, which of the following statements is correct ? (cos 
f)=  
A. 0  B. 0.5 C. 1 D. None of these  
 
20. In LCR circuit, phase difference between voltage and current cannot be 
A. 80° B. 90°  C. 145° D. 0°  
 
21. If speed is plotted along x-axis and Kinetic energy against y-axis, then the graph obtained has 
a shape similar to that of 
A. circle B. ellipse C. hyperbola D. parabola 
 
22. A magnetic needle lying parallel to a magnetic field requires w units of work to turn it 
through 60°. The torque needed to maintain the needle in this position will be  
A. (v 3) w B. w 
 
 
   
 
C. (v 3w)/2 D. 2w  
23. A vertical straight conductor carries a 
current vertically upwards. A point p lies to the 
east of it at a small distance and another point Q 
lies to west of it at the same distance. The 
magnetic field at p is 
A. greater than at Q  B. same as at Q  
C. less than at Q  
D. greater or less at Q 
depending upon the 
strength of the current  
 
24. In a parallel arrangement if (R
1
 > R
2
), the power dissipated in resistance R
1
 will be  
A. less than R
2
 B. same as R
2
 C. more than R
2
 D. none of these  
 
25. For a fuse wire to be installed in the supply line in a house which one of the following is 
immaterial ?  
A. the specific resistance of the material of the 
fuse wire  
B. the diameter of the fuse wire 
C. the length of the fuse wire D. none of these  
 
26. If V is voltage applied, E
a
 is emf drop across the armature, the armature current of a d.c. 
motor I
a
 is given by  
A. (V + E
a
)/R
a
 B. E
a
/R
a
 C. V- E
a
/R
a
 D. V/R
a
  
 
27. The current of 2.0 amperes passes through a cell of e.m.f. 1.5 volts having internal resistance 
of 0.15? . The potential difference measured in volts across both the terminals of the cell will be
A. 1.35 B. 1.50 C. 1.00 D. 1.20  
28. In this circuit, current ratio i
1
/i
2
 depends upon 
A. R
1
, R
2
 
and R 
B. R, R
1
, 
R
2
 and E 
C. R
1
 and 
R
2
 
D. E and R
 
29. A cell of emf E is connected across a resistance r. The potential difference between the 
terminals of the cell is found to be V. The internal resistance of the cell must be  
A. 2(E - V)V/r B. 2(E - V)r/E  C. (E - V) r/V D. (E- V)/r  
30. Copper and germanium are both cooled to 70 K from room temperature, then  
A. resistance of copper increases while that of 
germanium decreases 
B. resistance of copper decreases while that of 
germanium increases 
C. resistance of both decreases D. resistance of both increases  
 
31. The potential difference between the points A and B of the electrical circuit given is  
A. 1.5 V B. 1.0 V 
 
 
   
 
32. A moving coil galvanometer has a resistance 
of 9.8? and gives a full scale deflection when a 
current of 10 mA passes tbrough it. The value of 
the shunt required to convert it into a mini 
ammeter to measure current upto 500 mA is  
A. 0.02?  B. 0.2?  C. 2?  D. 0.4?  
 
33. The total electrical resistance between the points A and B of the circuit shown in the figure is
A. 9.02 ? A. 15 ? 
C. 30 ? D. 100 ? 
 
34. If the plates of a charged parallel plate capacitor are pulled away from each other  
A. capacitance 
increases 
B. energy increases  C. voltage increases D. voltage decreases  
 
35. A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The 
battery remains connected and a glass plate is interposed between the plates of the capacitor, 
then 
A. the charge on plates will be reduced 
B. the charge on plates will increase  
C. the potential difference between the plates of the capacitor will be reduced  
D. the potential difference between the plates of the capacitor will increase  
36. A person weighing 70Kg wt lifts a mass of 30 Kg to the roof of a building 10 m high. If he 
takes 50 sec to do so,then the power spent is 
A. 19.6 W B. 196 W C. 300 W D. 50 W 
37. Work done in carrying a charge q from A to B along a semi-circle is 
A. 2prq B. 4prq 
 
C. prq D. 0 
 
38. A particle A has charge +q and particle B has charge +4q with each of them having the same 
mass m. When allowed to fall from rest through same electrical potential difference, the ratio of 
their speed V
A
 : V
B
 will become 
A. 2:1 B. 1:2 C. 1:4 D. 4:1 
39. The electric field at a small distance R from an infinitely long plane sheet is directly 
proportional to  
A. R
2
/2 B. R/2  C. R
-2
  D. none of these  
40. In the diagram, the electric field intensity will be zero at a distance 
A. between -q and +2q charge B. towards +2q on the line drawn
 
 
   
 
Page 5


1. The number of free electrons per 10 mm of an ordinary copper wire is 2 x 10
21
. The average 
drift speed of the electrons is 0.25 mm/s. The current flowing is:  
A. 0.8 A B. 8 A C. 80 A  D. 5 A  
 
2. Which of the following cells is more likely to be damaged due to short circuiting?  
A. Daniel B. Dry C. Acid D. Fuel  
 
3. A gas expands from 5 litre to 105 litre at a constant pressure 100N/m
2
. The work done is  
A. 1 Joule B. 4 Joule C. 8 Joule D. 10 Joule 
 
4. The Helium nuclei can be formed from  
A. Hydrogen nuclei by process of chain reactionB. Hydrogen nuclei through nuclear fission 
C. Hydrogen nuclei through nuclear fusion D. None of these  
 
5. In the atom bomb dropped by Americans in 1945 on Nagasaki, Japan, the fissionable material 
used was  
A. Helium 4 B. Plutonium 239  C. Uranium 235 D. Uranium 233  
 
6. The engine of a truck moving a straight road delivers constant power. The distance travelled 
by the truck in time t is proportional to 
A. t B. t
 2
 C. vt D. t
 3/2
 
7. The velocity of electron in ground state of 
hydrogen atom is 
A. 2 x 10
5
 
m/s 
B. 2 x 10
6
 
m/s  
C. 2 x 10
7
 
m/s 
D. 2 x 10
8
 
m/s  
 
8. The radius of the first orbit of the electron in a hydrogen atom is 5.3 x 10
-11
 m; then the radius 
of the second orbit must be 
A. 15.9 x 10
-11
 m B. 10.6 x 10 m C. 21.2 x 10
-11
 m D. 42.4 x 10
-11
 m  
 
9. A person pushes a rock of 10
10
Kg mass by applying a force of only 10N for just 4 seconds. 
The work done is  
A. 1000 Joule  B. 0 J  C. nearly zero D. positive 
 
10. One can take pictures of objects which are completely invisible to the eye using camera films 
which are sensitive to  
A. ultra-violet rays B. sodium light  C. visible light D. infra-red rays  
 
11. Light from a 100 watt filament bulb is passed through an evacuated glass tube containing 
sodium vapour at a high temperature. If the transmitted light is viewed through a spectrometer, 
we will observe  
A. D
1
 and D
2
 lines of sodium with good 
intensity  
B. dark lines where D
1
 and D
2
 lines should have 
been observed 
C. continuous radiation from the bulb only D. the entire emission spectrum of sodium  
 
 
   
 
12. Under the action of a constant force, a 
particle is experiencing a constant acceleration. 
The power is 
A. zero B. positive 
C. negative D. increasing uniformly 
with time 
13. If in a plane convex lens the radius of curvature of the convex surface is 10 cm and the focal 
length of the lens is 30 cm, the refractive index of the material of the lens will be  
A. 1.5  B. 1.66  C. 1.33 D. 3  
14. A plane convex lens has radius of curvature 30 cm. If the refractive index is 1.33, the focal 
length of lens is  
A. 10 cm B. 90 cm C. 30 cm D. 60 cm  
 
15. A beam of light is converging towards a point I on a screen. A plane parallel plate of glass 
(thickness in the direction of the beam = t, refractive index = µ ) is introduced in the path of the 
beam. The convergence point is shifted by  
A. t (µ - 1) away  B. t (1 + 1/µ ) away C. t (1 - 1/µ ) nearer D. t (1 + 1/µ ) nearer  
 
16 . In Young's double silt experiment the separation between the silts is halved and the distance 
between the silts and screen is doubled. The fringe width will be  
A. unchanged B. halved  C. doubled D. quadrupled  
 
17. Wavelength of red light is ? 
r
, violet rays is ? 
v
 and X -ray is ? 
x
 then the order of 
wavelengths is  
A. ? 
x
 >? 
v
 >? 
r
 B. ? 
v
 >? 
x
 >? 
r
 C. ? 
r
 >? 
x
 >? 
v
 D. ? 
r
 >? 
v
 >?  
18. The amount of work done by the labourer 
who carries n bricks, each of mass m, to the roof 
of a house whose height is h is 
A. n mgh B. mgh/n C. zero D. ghn/m 
 
19. In LCR circuit in the state of resonance, which of the following statements is correct ? (cos 
f)=  
A. 0  B. 0.5 C. 1 D. None of these  
 
20. In LCR circuit, phase difference between voltage and current cannot be 
A. 80° B. 90°  C. 145° D. 0°  
 
21. If speed is plotted along x-axis and Kinetic energy against y-axis, then the graph obtained has 
a shape similar to that of 
A. circle B. ellipse C. hyperbola D. parabola 
 
22. A magnetic needle lying parallel to a magnetic field requires w units of work to turn it 
through 60°. The torque needed to maintain the needle in this position will be  
A. (v 3) w B. w 
 
 
   
 
C. (v 3w)/2 D. 2w  
23. A vertical straight conductor carries a 
current vertically upwards. A point p lies to the 
east of it at a small distance and another point Q 
lies to west of it at the same distance. The 
magnetic field at p is 
A. greater than at Q  B. same as at Q  
C. less than at Q  
D. greater or less at Q 
depending upon the 
strength of the current  
 
24. In a parallel arrangement if (R
1
 > R
2
), the power dissipated in resistance R
1
 will be  
A. less than R
2
 B. same as R
2
 C. more than R
2
 D. none of these  
 
25. For a fuse wire to be installed in the supply line in a house which one of the following is 
immaterial ?  
A. the specific resistance of the material of the 
fuse wire  
B. the diameter of the fuse wire 
C. the length of the fuse wire D. none of these  
 
26. If V is voltage applied, E
a
 is emf drop across the armature, the armature current of a d.c. 
motor I
a
 is given by  
A. (V + E
a
)/R
a
 B. E
a
/R
a
 C. V- E
a
/R
a
 D. V/R
a
  
 
27. The current of 2.0 amperes passes through a cell of e.m.f. 1.5 volts having internal resistance 
of 0.15? . The potential difference measured in volts across both the terminals of the cell will be
A. 1.35 B. 1.50 C. 1.00 D. 1.20  
28. In this circuit, current ratio i
1
/i
2
 depends upon 
A. R
1
, R
2
 
and R 
B. R, R
1
, 
R
2
 and E 
C. R
1
 and 
R
2
 
D. E and R
 
29. A cell of emf E is connected across a resistance r. The potential difference between the 
terminals of the cell is found to be V. The internal resistance of the cell must be  
A. 2(E - V)V/r B. 2(E - V)r/E  C. (E - V) r/V D. (E- V)/r  
30. Copper and germanium are both cooled to 70 K from room temperature, then  
A. resistance of copper increases while that of 
germanium decreases 
B. resistance of copper decreases while that of 
germanium increases 
C. resistance of both decreases D. resistance of both increases  
 
31. The potential difference between the points A and B of the electrical circuit given is  
A. 1.5 V B. 1.0 V 
 
 
   
 
32. A moving coil galvanometer has a resistance 
of 9.8? and gives a full scale deflection when a 
current of 10 mA passes tbrough it. The value of 
the shunt required to convert it into a mini 
ammeter to measure current upto 500 mA is  
A. 0.02?  B. 0.2?  C. 2?  D. 0.4?  
 
33. The total electrical resistance between the points A and B of the circuit shown in the figure is
A. 9.02 ? A. 15 ? 
C. 30 ? D. 100 ? 
 
34. If the plates of a charged parallel plate capacitor are pulled away from each other  
A. capacitance 
increases 
B. energy increases  C. voltage increases D. voltage decreases  
 
35. A parallel plate capacitor is charged by connecting its plates to the terminals of a battery. The 
battery remains connected and a glass plate is interposed between the plates of the capacitor, 
then 
A. the charge on plates will be reduced 
B. the charge on plates will increase  
C. the potential difference between the plates of the capacitor will be reduced  
D. the potential difference between the plates of the capacitor will increase  
36. A person weighing 70Kg wt lifts a mass of 30 Kg to the roof of a building 10 m high. If he 
takes 50 sec to do so,then the power spent is 
A. 19.6 W B. 196 W C. 300 W D. 50 W 
37. Work done in carrying a charge q from A to B along a semi-circle is 
A. 2prq B. 4prq 
 
C. prq D. 0 
 
38. A particle A has charge +q and particle B has charge +4q with each of them having the same 
mass m. When allowed to fall from rest through same electrical potential difference, the ratio of 
their speed V
A
 : V
B
 will become 
A. 2:1 B. 1:2 C. 1:4 D. 4:1 
39. The electric field at a small distance R from an infinitely long plane sheet is directly 
proportional to  
A. R
2
/2 B. R/2  C. R
-2
  D. none of these  
40. In the diagram, the electric field intensity will be zero at a distance 
A. between -q and +2q charge B. towards +2q on the line drawn
 
 
   
 
C. away from the line towards 
+2q 
D. away from the line towards -q
41. Wein's displacement law is given by  
A. ? 
m
 = 
constant  
B. T/? 
m
 = 
constant  
C. ? 
m
 T = 
constant 
D. T = ? 
m
 
= constant 
 
42. If two electrons are forced to come closer to each to each other, then the potential energy 
A. becomes zero B. increases C. decreases D. becomes infinite 
 
43. The specific heat at constant pressure is greater than that of the same gas at constant volume 
because  
A. at constant volume work is done in expanding the gas  
B. at constant pressure work is done in expanding the gas  
C. the molecular attraction increases more at constant pressure 
D. the molecular vibration increases more at constant pressure  
 
44. The specific heats of CO
2
 at constant pressure and constant volume are 0.833 J/kg.K and 
0.641 J/kg.K respectively. If molecular weight of CO
2
 is 44, what is the universal constant R? 
A. 4.19 x 10
7
 erg/cal  B. 848.8 J/gm/K C. 8.448 J/mol/K  D. 4.19 J/cal  
 
45. The freezing point of the liquids decreases when pressure is increased, if the liquid  
A. expands while freezing B. contracts while freezing  
C. does not change in volume while freezing D. none 
46. The equation of a transverse wave on a 
stretched string is given by 
y = 0.05 sin p (2t/0.002 -x/0.1 ) where x and y 
are expressed in metres and t in sec. 
The speed of the wave is 
A.100 
m/sec 
B. 50 m/s C. 200 m/s D. 400 m/s
 
47. The ratio of velocity of the body to the velocity of sound is called 
A. Magic number B. Laplace number C. Natural number D. Mach number 
 
48. Television signals on earth cannot be received at distances greater than 100 km from the 
transmission station. The reason behind this is that 
A. the receiver antenna is unable to detect the signal at a distance greater than 100 km 
B. the TV programme consists of both audio and video signals  
C. the TV signals are less powerful than radio signals 
D. the surface of earth is curved like a sphere 
 
49. A ball is thrown from a height of h m with an initial downward velocity v
0
. It hits the ground, 
loses half of its Kinetic energy & bounces back to the same height. The value of v
0
 is 
A. v2gh B. vgh C. v3gh D. v2.5gh