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

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 # 2

Centripetal acceleration is also called _______ acceleration:

Question # 3

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 # 4

Direction of motion ______ in circular motion:

Question # 5

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

Question # 6

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 # 7

One radian is

Question # 8

Conventional the angular Velocity is Directed at an angle of:

Question # 9

Moment of inertia depends upon:

Question # 10

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

Question # 11

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

Question # 12

One radian is:

Question # 13

Angular momentum is a:

Question # 14

Angular velocity is a:

Question # 15

Centripetal acceleration is also called ______ acceleration:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Centripetal acceleration is also called ______ acceleration
A. Tangential
B. Radial
C. Angular
D. None of them
2 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
3 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:
A. 1 m
B. 5 m
C. 10 m
D. 15 m
4 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
5 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
6 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
7 Direction of motion_______ in circular of motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
8 Moment of inertia depends upon:
A. Mass
B. Selection of axis of rotation
C. Both of them
D. None of these
9 When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
A. Zero
B. Its average velocity
C. Its angular displacement
D. None of these
10 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200

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