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

Conventionally the angular velocity is directed at an angle of

Question # 2

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 # 3

When angular acceleration is positive, the body rotates:

Question # 4

One radian is

Question # 5

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

Question # 6

Centripetal acceleration is also called ______ acceleration

Question # 7

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

Question # 8

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 # 9

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

Question # 10

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

Question # 11

Moment of inertia depends upon:

Question # 12

One radian is equal to:

Question # 13

One radian is:

Question # 14

Direction of angular momentum is determined by:

Question # 15

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

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
2 Satellites are held in orbits around Earth by its:
A. Gravitational field
B. Magnetic field
C. Own orbital motion
D. Own spin motion
3 Direction of angular momentum is determined by:
A. Right hand rule
B. Head to tail rule
C. Left hand rule
D. None of them
4 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
5 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
6 Angular momentum is a:
A. vector quantity
B. Imaginary quantity
C. Complex Quantity
D. Scalar Quantity
7 Centripetal acceleration is also called ______ acceleration:
A. Tangential
B. Radial
C. Angular
D. None of them
8 A rotating body tends to be slower, when its angular acceleration is:
A. Positive
B. Negative
C. Zero
D. Infinity
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 cm
C. 0.8 m
D. 0.008 m
10 Moment of linear momentum is called.
A. Moment arm
B. Moment of inertia
C. Inertia
D. Angular momentum

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