**Physics MCQs on Work, Momentum:** In this blog post, we have provided important Physics Multiple choice questions on work and Momentum.

These Physics MCQs on Work are very useful for all classes (9, 10, 11, 12, other competitive exams).

## Physics MCQs on Work, Momentum

1. Work is a

** scalar quantity**

vector quantity

neutral

None of these

2. Mechanical energy of a system exists in form

Kinetic energy

Potential energy

** Kinetic energy and Potential energy**

None of these

3. Work done by a conservative force does not depend

** on the path of the moving object**

on its initial position

on its final position

on its initial and final positions

4. Work done by a conservative force depends

on the path of the moving object

on its initial position

on its final position

** on its initial and final positions**

5. Work done is path dependent for

a conservative force

** a non-conservative force**

both A & B

None of the These

6. Laws of conservation of momentum always hold well in

** any type of collision**

elastic collision

inelastic collision

None of the These

7. A rigid body can have

rotational motion

translational motion

**rotational as well as translational motion **

None of these

8. When no net torque acts on a body

the angular momentum of the body is minimum

the angular momentum of the body is maximum

the angular momentum of the body changes

** the angular momentum of the body remains constant**

9. By what percentage does the kinetic energy increase, if the linear momentum is increased by 50%?

25%

50%

** 125%**

75%

10. What is the angular momentum vector in an orbital motion?

The vector is along the radius vector

** The vector is perpendicular to the orbital plane**

The vector is parallel to the linear momentum

The vector is in the orbital plane

11. On which of the following factor does the moment of inertia of an object not depend upon

** Angular velocity**

Axis of rotation

Distribution of mass

Mass of an object

12. When the torque acting on the system is zero, which of the following is constant?

Linear impulse

** Angular momentum**

Linear momentum

Force

13. The angular momentum of a rigid body is L and its kinetic energy is halved. What happens to its angular momentum?

L

L/2

2L

** L/4**