ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 5 Circular Motion

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

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ECAT Pre General Science Physics Chapter 5 Circular Motion

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Question # 1

Moment of linear momentum is called.

Question # 2

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

Question # 3

Which one is related to angular motion:

Question # 4

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:

Question # 5

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

Question # 6

An axis of rotation

Question # 7

One radian is equal to:

Question # 8

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

Question # 9

Moment of inertia depends upon:

Question # 10

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

Question # 11

Centripetal acceleration is also called ________ acceleration

Question # 12

One radian is:

Question # 13

Angular velocity is a:

Question # 14

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

Question # 15

Conventionally the angular velocity is directed at an angle of

Question # 16

The useful unit of angular replacement in SI unit is:

Question # 17

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

Question # 18

Direction of motion _________ in circular motion

Question # 19

A car is 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 # 20

When angular acceleration is positive, the body rotates:

Question # 21

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 # 22

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 # 23

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

Question # 24

Direction of angular momentum is determined by:

Question # 25

One radian is equal to:

Question # 26

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:

Question # 27

One radian is:

Question # 28

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

Question # 29

Direction of motion_______ in circular of motion:

Question # 30

One radian is:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Einstein's theory about gravity if better than Newton's because it gave explanation of:
A. Inverse square law
B. Bending of light
C. Both A and B
D. None of above
2 A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:
A. 9.42 rad/sec
B. 2.6 rev/sec
C. 1.5 rev/sec
D. Both A and C
3 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
4 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
5 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
6 The center of mass of a sphere lies at:
A. The axis of the sphere
B. Circumference of sphere
C. Center of the sphere
D. None of them
7 The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:
A. 2.5 sec
B. 0.06 sec
C. 15.7 sec
D. 0.4 sec
8 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
9 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
10 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

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