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Online Tests
ECAT Physics Chapter 5 Circular Motion Online Test MCQs With Answers
Question # 1
A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is:
Choose an answer
0.05 m
0.08 m
0.8 m
0.008 m
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Question # 2
Direction of motion_______ in circular of motion:
Choose an answer
Changes off and on
Changes continuously
Does not change
None of them
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Question # 3
Conventionally the angular velocity is directed to an angle of:
Choose an answer
90
° to the axis of rotation
30
° to the axis of rotation
0
° to the axis of rotation
None of the above
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Question # 4
Direction of motion ______ in circular motion:
Choose an answer
Changes off and on
Changes continuously
Does not change
None of them
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Question # 5
A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:
Choose an answer
Radius of the circle
Twice the radius
Thrice the radius
None of these
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Question # 6
When a body moves with a constant speed in a circle:
Choose an answer
No work is done on it
No acceleration is produced in the body
Velocity remains constant
None of these
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Question # 7
One radian is equal to:
Choose an answer
30.3
°
45.3
°
50.3
°
57.3
°
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Question # 8
When angular acceleration is positive, the body rotates:
Choose an answer
Slower
Slowest
Faster
None of these
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Question # 9
When a body moves along a circular path with constant speed, it has an acceleration, which is always directed
Choose an answer
Along the tangent
Towards the centre
Away from the centre
None of them
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Question # 10
The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are
Choose an answer
3
24
126
200
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Question # 11
Centripetal acceleration is also called ________ acceleration
Choose an answer
Tangential
Radial
Angular
None of these
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Question # 12
When a body moves with a constant speed in a circle:
Choose an answer
No work is done on it
No acceleration is produced in the body
Velocity remains constant
None of these
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Question # 13
______ plays the same role during angular motion as played by the mass in linear motion
Choose an answer
Torque
Angular Momentum
Moment of a force
Moment of inertia
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Question # 14
A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
Choose an answer
49 rad/sec
2
1 rad/sec
2
0.16 rev/sec
2
Both A and C
Both B and C
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Question # 15
A rotating wheel accelerates up to the value of 0.75 rev/sec
2
after 2 seconds of its start. Its angular velocity becomes:
Choose an answer
9.42 rad/sec
2.6 rev/sec
1.5 rev/sec
Both A and C
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Question # 16
Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.
Choose an answer
Disc, sphere
sphere, hoop
Thin rod, hoop
Hoop,disc
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