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

One radian is

Question # 3

Centripetal force performs:

Question # 4

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:

Question # 5

Direction of motion ______ in circular motion:

Question # 6

Centripetal acceleration is also called ______ acceleration

Question # 7

Which one is related to angular motion:

Question # 8

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

Question # 9

Which of the following pairs does not have identical dimensions?

Question # 10

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

Question # 11

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

Question # 12

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of

Question # 13

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

Question # 14

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

Question # 15

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:

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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 number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
3 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
4 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
5 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
6 Angular velocity is a:
A. Scalar quantity
B. Vector quantity
C. Complex quantity
D. None of these
7 When angular acceleration is positive, the body rotates:
A. Slower
B. Slowest
C. Faster
D. None of these
8 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
9 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
10 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

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