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


7.
The Earth continues to spin because:
A.
There is no external torque
B.
There is frictionless rotation
C.
It has uniform mass distribution
D.
Gravity balances rotation
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ANSWER :
A. There is no external torque
8.
The torque acting on a particle moving in a straight line with constant velocity is:
A.
Maximum
B.
Constant
C.
Zero
D.
Depends on mass
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ANSWER :
C. Zero
9.
The rotational analogue of force in translational motion is:
A.
Angular momentum
B.
Torque
C.
Moment of inertia
D.
Angular acceleration
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ANSWER :
B. Torque
10.
The law of conservation of angular momentum states that:
A.
Angular velocity remains constant
B.
Angular acceleration remains constant
C.
Angular momentum remains constant if no external torque acts
D.
Rotational kinetic energy remains constant
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ANSWER :
C. Angular momentum remains constant if no external torque acts
11.
The vector direction of angular momentum is given by:
A.
Left-hand rule
B.
Newton's third law
C.
Right-hand rule
D.
Law of inertia
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ANSWER :
C. Right-hand rule
12.
A particle moving in a circular path with constant speed has:
A.
Zero angular momentum
B.
Constant angular momentum
C.
Decreasing angular momentum
D.
Increasing angular momentum
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ANSWER :
B. Constant angular momentum