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 a circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:

Question # 2

In case of planets, the necessary acceleration is provided by:

Question # 3

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 # 4

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 # 5

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

Question # 6

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 # 7

An axis of rotation

Question # 8

One radian is:

Question # 9

Centripetal acceleration is also called ________ acceleration

Question # 10

Centripetal acceleration is also called _______ acceleration:

Question # 11

Conventionally the angular velocity is directed at an angle of

Question # 12

Angular velocity is a:

Question # 13

Conventionally the angular velocity is directed to an angle of:

Question # 14

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Question # 15

Centripetal force performs:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these
2 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
3 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
4 INTELSAT operates at frequencies 4, 6, 11, 14 having unit of
A. KHz
B. MHz
C. GHz
D. BHz
5 Direction of motion ______ in circular motion:
A. Changes off and on
B. Changes continuously
C. Does not change
D. None of them
6 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
7 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
8 Conventionally the angular velocity is directed to an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of the above
9 When body moves along a circular path with constant speed, it has an acceleration, which is always directed;
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them
10 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°

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