ECAT Pre General Science Physics Chapter 5 MCQ Test With Answer

Question # 1

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 # 2

One radian is:

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

Question # 3

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

Disc, sphere A
sphere, hoop B
Thin rod, hoop C
Hoop,disc D

Question # 4

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

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

Question # 5

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 # 6

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:

38 m/sec A
3.8 m/sec B
0.6 m/sec C
None of these D

Question # 7

______ 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 # 8

Circular motion is an example of motion in:

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

Question # 9

Direction of motion _______ in circular motion

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

Question # 10

Conventional 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 above D

Question # 11

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 # 12

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 # 13

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

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

Question # 14

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 # 15

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:

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

Question # 16

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

38 m/sec A
3.8 m/sec B
0.6 m/sec C
None of these D

Question # 17

Centripetal acceleration is also called ______ acceleration:

Tangential A
Radial B
Angular C
None of them D

Question # 18

In rotational motion, analogue of force F us called:

Couple A
Torque B
Mass C
Moment of intertia D

Question # 19

The number of countries who manage the largest satellite system is:

3 A
24 B
126 C
200 D

Question # 20

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 # 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

An axis of rotation

Is a straight line A
Is normal to the plane of rotation B
Passes through pivot point O C
All of them D

Question # 23

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:

10 m A
12 m B
13 m C
15 m D

Question # 24

Which of the following pairs does not have identical dimensions?

Torque and energy A
Energy and work B
Momentum and impulse C
Mass and moment of inertia D

Question # 25

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

KHz A
MHz B
GHz C
BHz D

Question # 26

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

Degree A
Revolution B
Radian C
Metre D

Question # 27

Conventionally the angular velocity is directed to 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 # 28

One radian is equal to:

30.3° A
45.3° B
50.3° C
57.3° D

Question # 29

The center of mass of a sphere lies at:

The axis of the sphere A
Circumference of sphere B
Center of the sphere C
None of them D

Question # 30

Satellites are held in orbits around Earth by its:

Gravitational field A
Magnetic field B
Own orbital motion C
Own spin motion D

Sr.#	Question	Answer
1	Direction of motion_______ in circular of motion:	A. Changes off and on B. Changes continuously C. Does not change D. None of them
2	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. 1 m B. 5 m C. 10 m D. 15 m
3	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
4	Angular velocity is a:	A. Scalar quantity B. Vector quantity C. Complex quantity D. None of these
5	When a body moves along a circular path with constant speed, it has an acceleration, which is always directed	A. Along the tangent B. Towards the centre C. Away from the centre D. None of them
6	A rotating wheel accelerates up to the value of 0.75 rev/sec²after 2 seconds of its start. Its angular velocity becomes:	A. 9.42 rad/sec B. 2.6 rev/sec C. 1.5 rev/sec D. Both A and C
7	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:	A. 0.05 m B. 0.08 m C. 0.8 m D. 0.008 m
8	In rotational motion, analogue of force F us called:	A. Couple B. Torque C. Mass D. Moment of intertia
9	In case of planets, the necessary acceleration is provided by:	A. Gravitational force B. Coulomb force C. Frictional force D. None of these
10	Centripetal acceleration is also called ______ acceleration:	A. Tangential B. Radial C. Angular D. None of them

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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

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

One radian is:

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

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 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:

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

Circular motion is an example of motion in:

Direction of motion _______ in circular motion

Conventional the angular Velocity is Directed at an angle of:

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

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 body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

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:

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 toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Centripetal acceleration is also called ______ acceleration:

In rotational motion, analogue of force F us called:

The number of countries who manage the largest satellite system 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:

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

An axis of rotation

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:

Which of the following pairs does not have identical dimensions?

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

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

Conventionally the angular velocity is directed to an angle of:

One radian is equal to:

The center of mass of a sphere lies at:

Satellites are held in orbits around Earth by its:

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ECAT Physics Chapter 5 Important MCQ's

Test Questions

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 a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path: