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

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

Question # 2

Conventionally the angular velocity is directed to an angle of:

Question # 3

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

Question # 4

The instantaneous acceleration of a body moving with constant speed in a circle:

Question # 5

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

Question # 6

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

Question # 7

Moment of inertia depends upon:

Question # 8

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

Question # 9

Direction of motion _______ in circular motion

Question # 10

Which one is related to angular motion:

Question # 11

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 # 12

When a body moves with a constant speed in a circle:

Question # 13

One radian is:

Question # 14

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:

Question # 15

One radian is

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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
2 Direction of motion_______ in circular of motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
3 Radian is defined as the angle subtended at the center of a circle by an arc of:
A. Length equal to its diameter
B. Length equal to its radius
C. Any length
D. None of these
4 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
5 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
6 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
7 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these
8 A rotating body tends to be slower, when its angular acceleration is:
A. Positive
B. Negative
C. Zero
D. Infinity
9 If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will
A. Increase
B. Decrease
C. Remain constant
D. None of these
10 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these

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