ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

One radian is:

Question # 2

Moment of inertia depends upon:

Question # 3

Direction of angular momentum is determined by:

Question # 4

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

Question # 5

When a body moves along a circular path with constant speed, it has an acceleration, which is always directed

Question # 6

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Question # 7

One radian is:

Question # 8

The rear wheels of an automobile are rev/sec which is reduced to 38 rad/sec in 5 seconds when brakes are applied. Its angular acceleration is:

Question # 9

A car is turning around a corner at 10 m/sec as it travels along an arc of circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:

Question # 10

The number of countries who manage the largest satellite system is:

Question # 11

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 12

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

Question # 13

If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will

Question # 14

Direction of motion _______ in circular motion

Question # 15

One radian is

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The instantaneous acceleration of a body moving with constant speed in a circle:
A. Remains constant
B. Is called centripetal acceleration
C. Tangential acceleration
D. None of these
2 A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec2, then its angular velocity is rad/sec is:
A. 22/7
B. 7
C. 14
D. 21
3 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
4 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
A. 0.05 m
B. 0.08 cm
C. 0.8 m
D. 0.008 m
5 Which one is related to angular motion:
A. Moment of a force
B. Moment of inertia
C. Moment of momentum
D. None of these
6 An axis of rotation
A. Is a straight line
B. Is normal to the plane of rotation
C. Passes through pivot point O
D. All of them
7 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
8 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
9 When body moves along a circular path with constant speed, it has an acceleration, which is always directed;
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them
10 Conventionally the angular velocity is directed at an angle of
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of the above

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