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

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

Question # 2

Which of the following pairs does not have identical dimensions?

Question # 3

The number of "Earth Stations" which transmit signals to satellites and receive signals fro them are

Question # 4

Centripetal acceleration is also called _______ acceleration:

Question # 5

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 6

One radian is:

Question # 7

Direction of angular momentum is determined by:

Question # 8

If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will

Question # 9

Conventionally the angular velocity is directed at an angle of

Question # 10

One radian is

Question # 11

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

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

Which one is related to angular motion:

Question # 14

Circular motion is an example of motion in:

Question # 15

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:
A. Radius of the circle
B. Twice the radius
C. Thrice the radius
D. None of these
2 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:
A. 1 m
B. 5 m
C. 10 m
D. 15 m
3 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
4 Moment of linear momentum is called.
A. Moment arm
B. Moment of inertia
C. Inertia
D. Angular momentum
5 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
6 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
7 Radian is defined as the angle subtended at the center of a circle by an arc of:
A. Length equal to its diameter
B. Length equal to its radius
C. Any length
D. None of these
8 When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
A. Zero
B. Its average velocity
C. Its angular displacement
D. None of these
9 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
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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