Basic Concepts of Rotational Motion NEET Questions

Physics - Rotational Motion

Basic Concepts of Rotational Motion MCQ Questions


1.
An ideal rigid body is defined as a body in which:
A.
All particles have the same velocity at any instant
B.
The distances between all pairs of particles remain constant
C.
The body has no mass
D.
The body cannot rotate
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ANSWER :
B. The distances between all pairs of particles remain constant
2.
Which of the following is NOT an example of a body that can be treated as rigid?
A.
A steel beam under normal load
B.
A planet in orbital motion
C.
A rubber ball being squeezed
D.
A rotating flywheel
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ANSWER :
C. A rubber ball being squeezed
3.
In pure translational motion of a rigid body:
A.
Different particles have different velocities at any instant
B.
All particles of the body have the same velocity at any instant
C.
The body rotates about a fixed axis
D.
Particles on the axis are stationary
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ANSWER :
B. All particles of the body have the same velocity at any instant
4.
A block slides down a frictionless inclined plane. This motion is an example of:
A.
Pure rotational motion
B.
Combined translation and rotation
C.
Oscillatory motion
D.
Pure translational motion
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ANSWER :
D. Pure translational motion
5.
In rotation of a rigid body about a fixed axis, every particle of the body moves in a circle whose plane is:
A.
Parallel to the axis
B.
At 45° to the axis
C.
Along the direction of the axis
D.
Perpendicular to the axis with centre on the axis
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ANSWER :
D. Perpendicular to the axis with centre on the axis
6.
For a particle on the axis of rotation of a rigid body, its linear velocity is:
A.
Maximum
B.
Equal to ωR (R = body radius)
C.
Equal to angular velocity
D.
Zero
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ANSWER :
D. Zero