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

Which of the following pairs does not have identical dimensions?

Question # 2

One radian is:

Question # 3

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 # 4

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

Question # 5

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 # 6

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

Question # 7

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

Question # 8

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 # 9

Radian is defined as the angle subtended at the center of a circle by an arc of:

Question # 10

Centripetal acceleration is also called ________ acceleration

Question # 11

Direction of motion ______ in circular motion:

Question # 12

Centripetal acceleration is also called ______ acceleration:

Question # 13

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

Question # 14

Conventionally the angular velocity is directed at an angle of

Question # 15

Angular velocity is a:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
2 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
3 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:
A. KHz
B. MHz
C. GHz
D. BHz
4 A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
A. 49 rad/sec2
B. 1 rad/sec2
C. 0.16 rev/sec2
D. Both A and C
5 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
6 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:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
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 Direction of motion _______ in circular motion
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
9 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
10 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion

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