Basic Concepts of Rotational Motion NEET Questions

Physics - Rotational Motion

Basic Concepts of Rotational Motion MCQ Questions


7.
Rolling motion of a cylinder down an inclined plane is an example of:
A.
Pure translation only
B.
Pure rotation only
C.
Oscillatory motion
D.
Combination of translation and rotation
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ANSWER :
D. Combination of translation and rotation
8.
In rolling motion of a cylinder (without slipping), the velocity of the point of contact with the ground is:
A.
Maximum
B.
Equal to translational velocity of CM
C.
Zero
D.
2v (v = CM speed)
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ANSWER :
C. Zero
9.
A rigid body fixed along a line (axis) can have which type of motion?
A.
Only translational
B.
Only rotational
C.
Both translational and rotational
D.
Neither translational nor rotational
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ANSWER :
B. Only rotational
10.
The motion of a rigid body which is NOT pivoted or fixed in any way is:
A.
Only rotational
B.
Either pure translational or a combination of translational and rotational
C.
Only oscillatory
D.
Fixed in space
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ANSWER :
B. Either pure translational or a combination of translational and rotational
11.
The instantaneous angular velocity ω is defined as:
A.
Δθ/Δt for large Δt
B.
Total angle / total time
C.
dθ/dt (limiting value of Δθ/Δt as Δt→0)
D.
2π × frequency
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ANSWER :
C. dθ/dt (limiting value of Δθ/Δt as Δt→0)
12.
In rotation of a rigid body about a fixed axis, the angular velocity ω at any instant is:
A.
Different for different particles
B.
The same for all particles of the body
C.
Zero for outer particles
D.
Maximum for particles near the axis
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ANSWER :
B. The same for all particles of the body