Angular Momentum and Conservation of Angular Momentum and its Applications NEET Questions

Physics - Rotational Motion

Angular Momentum and Conservation of Angular Momentum and its Applications MCQ Questions


1.
The angular momentum of a particle is given by the vector product of ______ and _______.
A.
Force and mass
B.
Position vector and velocity
C.
Position vector and linear momentum
D.
Torque and time
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ANSWER :
C. Position vector and linear momentum
2.
The SI unit of angular momentum is:
A.
kg路m虏/s
B.
N路m
C.
kg路m/s虏
D.
N路m虏
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ANSWER :
A. kg路m虏/s
3.
Angular momentum is conserved when:
A.
No external force acts
B.
No external torque acts
C.
The force is perpendicular to velocity
D.
The system is in equilibrium
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ANSWER :
B. No external torque acts
4.
The moment of inertia of a solid sphere rotating about its diameter is:
A.
(2/5)MR虏
B.
(1/2)MR虏
C.
MR虏
D.
(3/5)MR虏
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ANSWER :
A. (2/5)MR虏
5.
If a spinning skater pulls in their arms, their angular velocity:
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
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ANSWER :
A. Increases
6.
A solid sphere is rotating freely about its axis of symmetry in free space. The radius of the sphere is increased while keeping its mass the same. Which of the following physical quantities would remain constant for the sphere?

NEET - 2015

A.
Angular velocity
B.
Moment of inertia
C.
Angular momentum
D.
Rotational kinetic energy
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ANSWER :
C. Angular momentum