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

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

Question # 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:

Question # 3

Direction of motion _______ in circular motion

Question # 4

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

Question # 5

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 # 6

Centripetal acceleration is also called ________ acceleration

Question # 7

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

Question # 8

Centripetal acceleration is also called _______ acceleration:

Question # 9

Which of the following pairs does not have identical dimensions?

Question # 10

Centripetal acceleration is also called ______ acceleration

Question # 11

Satellites are held in orbits around Earth by its:

Question # 12

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

Question # 13

One radian is

Question # 14

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 # 15

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:
A. 8.1 X 107N
B. 625 N
C. 6250 N
D. None of these
2 Conventional the angular Velocity is Directed at 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 above
3 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
A. 980 N
B. 580 N
C. 1380 N
D. Zero
4 An axis of rotation
A. Is a straight line
B. Is normal to the plane of rotation
C. Passes through pivot point O
D. All of them
5 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them
6 Centripetal force performs:
A. Maximum work
B. Negative work
C. Positive work
D. None of these
7 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
8 Conventionally the angular velocity is directed at 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 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 m
C. 0.8 m
D. 0.008 m
10 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them

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