Physics · NDA previous year questions

2016 35 questions

1. Q582016 · 17 Apr 2016

   Two bodies A and B are moving with equal velocities. The mass of B is double that of A. In this context, which one of the following statements is correct?

   1. A.Momentum of B will be double that of A.
   2. B.Momentum of A will be double that of B.
   3. C.Momentum of B will be four times that of A.
   4. D.Momenta of both A and B will be equal.
   Show answer

   Answer: A

2. Q592016 · 17 Apr 2016

   The S.I. unit of acceleration is

   1. A.$\mathrm{m}{\mathrm{s}}^{-1}$
   2. B.$\mathrm{m}{\mathrm{s}}^{-2}$
   3. C.$\mathrm{cm}{\mathrm{s}}^{-2}$
   4. D.$\mathrm{km}{\mathrm{s}}^{-2}$
   Show answer

   Answer: B

3. Q602016 · 17 Apr 2016

   An object is placed at the centre of curvature of a concave mirror of focal length 16 cm. If the object is shifted by 8 cm towards the focus, the nature of the image would be

   1. A.real and magnified
   2. B.virtual and magnified
   3. C.real and reduced
   4. D.virtual and reduced
   Show answer

   Answer: A

4. Q612016 · 17 Apr 2016

   A pencil is placed upright at a distance of 10 cm from a convex lens of focal length 15 cm. The nature of the image of the pencil will be

   1. A.real, inverted and magnified
   2. B.real, erect and magnified
   3. C.virtual, erect and reduced
   4. D.virtual, erect and magnified
   Show answer

   Answer: D

5. Q632016 · 17 Apr 2016

   Suppose the force of gravitation between two bodies of equal masses is F. If each mass is doubled keeping the distance of separation between them unchanged, the force would become

   1. A.F
   2. B.2 F
   3. C.4 F
   4. D.$\frac{1}{4}$ F
   Show answer

   Answer: C

6. Q642016 · 17 Apr 2016

   A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would

   1. A.lose one-fourth of its total energy
   2. B.lose one-fourth of its potential energy
   3. C.gain one-fourth of its potential energy
   4. D.gain three-fourth of its total energy
   Show answer

   Answer: B

7. Q652016 · 17 Apr 2016

   Mass of a particular amount of substance 1. is the amount of matter present in it. 2. does not vary from place to place. 3. changes with change in gravitational force. Select the correct answer using the code given below:

   1. A.1, 2 and 3
   2. B.1 and 2 only
   3. C.2 and 3 only
   4. D.1 only
   Show answer

   Answer: B

8. Q662016 · 17 Apr 2016

   The impulse on a particle due to a force acting on it during a given time interval is equal to the change in its

   1. A.force
   2. B.momentum
   3. C.work done
   4. D.energy
   Show answer

   Answer: B

9. Q692016 · 17 Apr 2016

   The motion of a car along a straight path is shown by the following figure: The car starts from O and reaches at A, B and C at different instants of time. During its motion from O to C and back to B, the distance covered and the magnitude of the displacement are, respectively

   
   1. A.25 km and 60 km
   2. B.95 km and 35 km
   3. C.60 km and 25 km
   4. D.85 km and 35 km
   Show answer

   Answer: D

10. Q942016 · 17 Apr 2016

    The brightness of a star depends on its

    1. A.size and temperature only
    2. B.size and distance from the earth
    3. C.size, temperature and mass
    4. D.size, temperature and distance from the earth
    Show answer

    Answer: D