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

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 # 2

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

Question # 3

The useful unit of angular replacement in SI unit is:

Question # 4

Direction of motion_______ in circular of motion:

Question # 5

Centripetal acceleration is also called ______ acceleration

Question # 6

Centripetal acceleration is also called _______ acceleration:

Question # 7

______ plays the same role during angular motion as played by the mass in linear motion

Question # 8

The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are

Question # 9

Circular motion is an example of motion in:

Question # 10

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

Question # 11

The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:

Question # 12

Angular velocity is a:

Question # 13

Direction of angular momentum is determined by:

Question # 14

Moment of inertia depends upon:

Question # 15

A rotating body tends to be slower, when its angular acceleration is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
2 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
3 Conventionally the angular velocity is directed to 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
4 Centripetal acceleration is also called _______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
5 Direction of motion ______ in circular motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
6 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
7 When a 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
8 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
9 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
10 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

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