ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

Question # 1

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

0.05 m A
0.08 m B
0.8 m C
0.008 m D

Question # 2

In case of planets, the necessary acceleration is provided by:

Gravitational force A
Coulomb force B
Frictional force C
None of these D

Question # 3

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

2.5 sec A
0.06 sec B
15.7 sec C
0.4 sec D

Question # 4

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:

Radius of the circle A
Twice the radius B
Thrice the radius C
None of these D

Question # 5

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:

0.05 m A
0.08 m B
0.8 m C
0.008 m D

Question # 6

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

No work is done on it A
No acceleration is produced in the body B
Velocity remains constant C
None of these D

Question # 7

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

KHz A
MHz B
GHz C
BHz D

Question # 8

In rotational motion, analogue of force F us called:

Couple A
Torque B
Mass C
Moment of intertia D

Question # 9

One radian is:

Greater than one degree A
Less than one degree B
Equal to one degree C
None of these D

Question # 10

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

Zero A
Its average velocity B
Its angular displacement C
None of these D

Question # 11

When angular acceleration is positive, the body rotates:

Slower A
Slowest B
Faster C
None of these D

Question # 12

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

No work is done on it A
No acceleration is produced in the body B
Velocity remains constant C
None of these D

Question # 13

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:

1 m A
5 m B
10 m C
15 m D

Question # 14

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:

22/7 A
7 B
14 C
21 D

Question # 15

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

0.05 m A
0.08 cm B
0.8 m C
0.008 m D

Question # 16

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

Length equal to its diameter A
Length equal to its radius B
Any length C
None of these D

Question # 17

Centripetal force performs:

Maximum work A
Negative work B
Positive work C
None of these D

Question # 18

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

Torque A
Angular Momentum B
Moment of a force C
Moment of inertia D

Question # 19

Angular momentum is a:

vector quantity A
Imaginary quantity B
Complex Quantity C
Scalar Quantity D

Question # 20

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

3 A
24 B
126 C
200 D

Question # 21

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

Increase A
Decrease B
Remains constant C
None of these D

Question # 22

Direction of motion _________ in circular motion

Changes off and on A
Changes continously B
Does not change C
None of them D

Question # 23

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

Inverse square law A
Bending of light B
Both A and B C
None of above D

Question # 24

Conventionally the angular velocity is directed at an angle of

90° to the axis of rotation A
30° to the axis of rotation B
0° to the axis of rotation C
None of the above D

Question # 25

One radian is

Greater than one degree A
Less than one degree B
Equal to one degree C
None of these D

Question # 26

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

980 N A
580 N B
1380 N C
Zero D

Question # 27

The rear wheels of an automobile are rev/sec which is reduced to 38 rad/sec in 5 seconds when brakes are applied. Its angular acceleration is:

5 rad/sec² A
-10 rav/sec² B
-10 rad/sec² C
-5 rav/sec² D

Question # 28

Circular motion is an example of motion in:

One dimension A
Two dimensions B
Three dimensions C
None of these D

Question # 29

Moment of inertia depends upon:

Mass A
Selection of axis of rotation B
Both of them C
None of these D

Question # 30

Angular velocity is a:

Scalar quantity A
Vector quantity B
Complex quantity C
None of these D

Sr.#	Question	Answer
1	Circular motion is an example of motion in:	A. One dimension B. Two dimensions C. Three dimensions D. None of these
2	______ plays the same role during angular motion as played by the mass in linear motion	A. Torque B. Angular Momentum C. Moment of a force D. Moment of inertia
3	One radian is:	A. Greater than one degree B. Less than one degree C. Equal to degree D. none of these
4	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
5	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
6	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
7	Moment of linear momentum is called.	A. Moment arm B. Moment of inertia C. Inertia D. Angular momentum
8	A body can have constant velocity when it follows:	A. A circular path B. A rectilinear path C. Trajectory of a projectile D. None of these
9	When a body moves with a constant speed in a circle:	A. No work is done on it B. No acceleration is produced in the body C. Velocity remains constant D. None of these
10	INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:	A. KHz B. MHz C. GHz D. BHz

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ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 5 Circular Motion

ECAT Pre General Science Physics Chapter 5 Circular Motion

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

In case of planets, the necessary acceleration is provided by:

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

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 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:

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

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

In rotational motion, analogue of force F us called:

One radian is:

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

When angular acceleration is positive, the body rotates:

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

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 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 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

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

Centripetal force performs:

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

Angular momentum is a:

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

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

Direction of motion _________ in circular motion

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

Conventionally the angular velocity is directed at an angle of

One radian is

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

The rear wheels of an automobile are rev/sec which is reduced to 38 rad/sec in 5 seconds when brakes are applied. Its angular acceleration is:

Circular motion is an example of motion in:

Moment of inertia depends upon:

Angular velocity is a:

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

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 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:

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