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

00:00
Question # 1

Direction of motion ______ in circular motion:

Question # 2

Centripetal acceleration is also called _______ acceleration:

Question # 3

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

Question # 4

Direction of motion _________ in circular motion

Question # 5

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

Question # 6

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

Question # 7

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

Question # 8

The center of mass of a sphere lies at:

Question # 9

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 # 10

Which of the following pairs does not have identical dimensions?

Question # 11

Direction of motion _______ in circular motion

Question # 12

One radian is equal to:

Question # 13

An axis of rotation

Question # 14

Moment of inertia depends upon:

Question # 15

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 # 16

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 # 17

One radian is:

Question # 18

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

Question # 19

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

Question # 20

One radian is:

Question # 21

Centripetal acceleration is also called ________ acceleration

Question # 22

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

Question # 23

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

Question # 24

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 # 25

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

Question # 26

One radian is:

Question # 27

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

Question # 28

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

Question # 29

When angular acceleration is positive, the body rotates:

Question # 30

When angular acceleration is positive, the body rotates:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
2 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
3 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
4 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
5 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
6 Angular momentum is a:
A. vector quantity
B. Imaginary quantity
C. Complex Quantity
D. Scalar Quantity
7 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
8 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
9 The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are
A. 3
B. 24
C. 126
D. 200
10 Which of the following pairs does not have identical dimensions?
A. Torque and energy
B. Energy and work
C. Momentum and impulse
D. Mass and moment of inertia

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