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 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 # 2

Centripetal acceleration is also called ______ acceleration:

Question # 3

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:

Question # 4

Angular momentum is a:

Question # 5

A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:

Question # 6

When a body moves with a constant speed in a circle:

Question # 7

Centripetal acceleration is also called ________ acceleration

Question # 8

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 # 9

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

Question # 10

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 # 11

Moment of inertia depends upon:

Question # 12

The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:

Question # 13

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:

Question # 14

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

Question # 15

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Which one is related to angular motion:
A. Moment of a force
B. Moment of inertia
C. Moment of momentum
D. None of these
2 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
3 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
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 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
6 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
7 Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.
A. Disc, sphere
B. sphere, hoop
C. Thin rod, hoop
D. Hoop,disc
8 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
9 Moment of inertia depends upon:
A. Mass
B. Selection of axis of rotation
C. Both of them
D. None of these
10 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:
A. 1 m
B. 5 m
C. 10 m
D. 15 m

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