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

Conventionally the angular velocity is directed to an angle of:

Question # 2

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Question # 3

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

Question # 4

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 # 5

A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:

Question # 6

An axis of rotation

Question # 7

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

Question # 8

Direction of motion _______ in circular motion

Question # 9

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

Question # 10

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

Question # 11

One radian is:

Question # 12

Angular velocity is a:

Question # 13

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

Question # 14

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Question # 15

The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Moment of inertia depends upon:
A. Mass
B. Selection of axis of rotation
C. Both of them
D. None of these
2 Direction of motion ______ in circular motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
3 When a body moves with a constant speed in a circle:
A. No work is done on it
B. No acceleration is produced in the body
C. Velocity remains constant
D. None of these
4 Circular motion is an example of motion in:
A. One dimension
B. Two dimensions
C. Three dimensions
D. None of these
5 Centripetal acceleration is also called ________ acceleration
A. Tangential
B. Radial
C. Angular
D. None of these
6 A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:
A. 22/7
B. 7
C. 14
D. 21
7 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
8 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
9 Conventional 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 above
10 The useful unit of angular replacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre

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