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

Centripetal acceleration is also called ______ acceleration

Question # 3

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 # 4

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be

Question # 5

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

Question # 6

Centripetal force performs:

Question # 7

Angular velocity is a:

Question # 8

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

Question # 9

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

Question # 10

In rotational motion, analogue of force F us called:

Question # 11

Direction of motion _________ in circular motion

Question # 12

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

Question # 13

Angular momentum is a:

Question # 14

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Question # 15

Conventional the angular Velocity is Directed at an angle of:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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
2 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
3 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
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 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
6 When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:
A. Along the tangent
B. Toward the centre
C. Away from the centre
D. None of them
7 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
A. 980 N
B. 580 N
C. 1380 N
D. Zero
8 A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:
A. 10 m
B. 12 m
C. 13 m
D. 15 m
9 The useful unit of the angular displacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
10 A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec2, then its angular velocity is rad/sec is:
A. 22/7
B. 7
C. 14
D. 21

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