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

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

Question # 2

Centripetal acceleration is also called ______ acceleration:

Question # 3

The useful unit of the angular displacement in SI unit is:

Question # 4

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

Question # 5

One radian is equal to:

Question # 6

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

Question # 7

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

Question # 8

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 # 9

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

Question # 10

A toy car 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 # 11

When angular acceleration is positive, the body rotates:

Question # 12

Centripetal force performs:

Question # 13

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

Question # 14

Conventionally the angular velocity is directed at an angle of

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:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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 m
C. 0.8 m
D. 0.008 m
2 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
3 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:
A. 5 rad/sec2
B. -10 rev/sec2
C. -10 rad/sec2
D. -5 rev/sec2
4 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
5 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
6 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these
7 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
8 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
9 A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:
A. 38 m/sec
B. 3.8 m/sec
C. 0.6 m/sec
D. None of these
10 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre

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