Physics 9 Unit 3 MCQs Tests

In this post, we have prepared 6 MCQs test of Federal Board Physics 9 Unit 3 MCQs Tests.

Physics 9 Unit 3 MCQs Tests

Practice MCQs Test No 1

36

Class 9 Physics
Unit 3
Practice MCQs Test No 1

1 / 14

Which of the following is the unit of momentum?

Ns

kgms^-2

Ns^-1

Nm

2 / 14

A string is stretched by two equal and opposite forces F Newton each. The tension in the string is:     

½ F Newton

F Newton

2F Newton

Zero

3 / 14

The mass of a body:

Increases when accelerated

Decreases when moving with high velocity

None of the above

Decreases when accelerated

4 / 14

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is:

20 N

10 N

5 N

Zero

5 / 14

If 20 N force produces an acceleration of 5ms^-2 in a body then mass of the body will be:         

4kg

5 kg

1/5 kg

1/4 kg

6 / 14

A boy jumps out of a moving bus. There is a danger for him to fall:

away from the bus

opposite to the direction of motion

in the direction of motion

towards the moving bus

7 / 14

What is SI unit of coefficient of friction?

Second

Kilogram

No unit

Meter

8 / 14

When horse pulls a cart, the action is on the:

Earth and cart

Earth

Horse

Cart

9 / 14

Newton's first law of motion is valid only in the absence of:

Friction

Net force

Momentum

Force

10 / 14

Which one of the following is the unit of momentum?  

kgms^-2

Nm

Ns^-1

Ns

11 / 14

Two bodies of masses m1 and m2 attached to the ends of an inextensible string passing over a frictionless pulling such that both move vertically. The acceleration of the body is:

\frac { { m }_{ 1 }\times { m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

\frac { { m }_{ 1 }-{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

\frac { { m }_{ 1 }+{ m }_{ 2 } }{ { m }_{ 1 }-{ m }_{ 2 } } g

\frac { { 2m }_{ 1 }{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

12 / 14

Inertia depends upon:

Force

Velocity

Mass

Net force

13 / 14

Which of the following material lowers friction when pushed between metal plates?

Fine marble powder

Oil

Water

Air

14 / 14

Mass of body is 2000g, its weight on the surface of earth is:

2 N

20 N

20000 N

0.2 N

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The average score is 58%

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Practice MCQs Test No 2

25

Class 9 Physics
Unit 3
Practice MCQs Test No 2

1 / 14

SI unit of momentum is:

kgm

kg

kg ms^-1

ms

2 / 14

Inertia depends upon:

Force

Mass

Velocity

Net Force

3 / 14

The acceleration produced by a force of 20N in a body of mass 8 kg will be:

0.4 ms^-1

2.5 ms^-2

2.5 ms^-1

0.4 ms^-2

4 / 14

a

ma

m

m/a

5 / 14

If ‘m’ is the mass of an object then its weight on the surface of the Earth will be:

2mg

mg

½ mg

None of these

6 / 14

A block of mass 4kg is supported by a string. The tension in the string is:

40 N

4 N

20 N

0 N

7 / 14

F = _______.      

P_f - P_i

t / (P_f - P_i)

P_i - P_f

(P_f - P_i) / t

8 / 14

The value of ‘g’ on the surface of moon is 1.6ms^-2. What will be the weight of a 100kg body on the surface of the moon?

1000 N

160 N

100 N

1600 N

9 / 14

The unit of momentum is:

kg^-1ms^-1

kg ms

kg ms^-1

kg ms^-2

10 / 14

The momentum of an object of mass 4 kg, moving with velocity 100 cms^-1 is _____.

0.4 Ns

4000 Ns

4 Ns

400 Ns

11 / 14

When a horse pulls a cart, the action is done on the:

Earth

Cart

Horse

Both Cart and Earth

12 / 14

What will be the weight of a body of 20kg mass?

200 newton

20 newton

10 newton

2 newton

13 / 14

The time required to change 22 Ns momentum by a force of 44 N is:

2 s

0.5 s

3 s

1 s

14 / 14

N = _______.

kg ms^-2

kg ms^-1

kg s^-2

kg m

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The average score is 63%

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Practice MCQs Test No 3

23

Class 9 Physics
Unit 3
Practice MCQs Test No 3

1 / 15

First taw of motion is also know as law of _______.

Torque

None of these

Acceleration

Inertia

2 / 15

Law of inertia is actually the _______ law of motion.

Second

Fourth

First

Third

3 / 15

Action and reaction are equal in magnitude but opposite in direction is called _______ law of motion.

Fourth

First

Third

Second

4 / 15

If mass of the body is doubled while keeping the force constant, then acceleration will be:

doubled

One fourth

Four times

One half

5 / 15

_________ of a body is the direct measure of inertia.

All of above

Momentum

Energy

Mass

6 / 15

The acceleration produced in a moving body is always in the direction of applied ________.

Momentum

Velocity

Speed

Force

7 / 15

_______ is the agency which changes or tends to change the state of rest or of uniform motion of a body.

Weight

Force

Inertia

Momentum

8 / 15

If force applied on the body is doubled while keeping the mass constant then acceleration will be:

One fourth

Four times

One half

Doubled

9 / 15

Laws of motion was presented by:

Galileo

Newton

Archimedes

Einstein

10 / 15

When force of 8 newton is applied on a body of mass 2kg then the acceleration produced will be:

4 ms^-2

0.4 ms^-2

160 ms^-2

16 ms^-2

11 / 15

The characteristic of a body due to which it tends to retain its state of rest or of uniform motion is known as:

Weight

Momentum

Force

Inertia

12 / 15

SI unit of force is:

Dynes

Pound

Kilogram

newton

13 / 15

Isaac Newton described the laws of motion in his famous book:

Kitab-ul-Astralab

Al-Manazir

Principia Mathematica

Qanoon-ul-Masoodi

14 / 15

When a force is applied on the body, _______ is produced in the body.

None of the above

Energy

Acceleration

Weight

15 / 15

The laws of motion established the relationship between motion and ________.

Momentum

Force

Acceleration

Torque

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The average score is 69%

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Practice MCQs Test No 4

16

Class 9 Physics
Unit 3
Practice MCQs Test No 4

1 / 15

Walking on road is an example of _______ law of motion.

Second

Third

First

Fourth

2 / 15

Weight is a _______ quantity.

Scalar

Derived

Vector

Negative

3 / 15

The weight of a body of mass 10 Kg on earth will be:

10 N

1 N

100 N

1000 N

4 / 15

______ of a body does not remain same everywhere.

All of above

Weight

Mass

Inertia

5 / 15

The Force with which earth attracts a body towards its center is known as:

Mass

Weight

Force

Inertia

6 / 15

Quantity of matter in a body is called:

Mass

Weight

Velocity

Force

7 / 15

Mass is a ______ quantity.

Derived

Scalar

Negative

Vector

8 / 15

Unit of weight is _______.

Nm

ms^-1

Kg

N

9 / 15

Mass of the body is measured by:

Physical balance

All of above

Spring balance

Free Fall Apparatus

10 / 15

The characteristic of a body which determines the magnitude of acceleration produced when a certain force acts upon it:

Force

Mass

Weight

Inertia

11 / 15

When a block is lying on a smooth surface, its weight is balanced by:

Mass

Normal reaction

Momentum

Inertia

12 / 15

The value of weight of a body of constant mass depends on:

Inertia

Force

Momentum

'g'

13 / 15

Weight of the body is measured by:

Free Fall Apparatus

Spring Balance

All of these

Physical Balance

14 / 15

________ of a body remains same everywhere.

Weight

Mass

Velocity

Acceleration

15 / 15

The _______ of a body always acts towards the center of the earth.

Velocity

Mass

Force

Weight

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The average score is 62%

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Practice MCQs Test No 5

13

Class 9 Physics
Unit 3
Practice MCQs Test No 5

1 / 10

SI unit of momentum is:

Ns

Both Ns and kgms^-1

kgms^-1

kgms^-2

2 / 10

Rolling friction is ______ than sliding friction.

Greater

Equal

Quartered

Less

3 / 10

Product of mass and velocity is known as:

Speed

Momentum

Acceleration

Force

4 / 10

Quantity of motion in a body is known as:

Momentum

Mass

Acceleration

Velocity

5 / 10

The force that opposes the motion of moving objects is known as:

Friction

Gravity

Repulsion

Weight

6 / 10

Motion of the rocket is an example of:

Weight

Law of conservation of momentum

Law of conservation of energy

First law of motion

7 / 10

Momentum of a moving body depends upon:

Weight

Velocity

Mass

Both mass and velocity

8 / 10

Kgms^-1 = _______

W

N

Ns

J

9 / 10

The maximum value of friction is known as the force of  ______ friction.

Limiting

Dynamic

Kinetic

Static

10 / 10

Rate of change of momentum is equal to:

Acceleration

Force

Velocity

Impulse

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The average score is 67%

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Challenge MCQs Test

20

---

Class 9 Physics
Unit 3
Full Chapter Challenge Test

1 / 68

What will be the weight of a body of 20kg mass?

2 newton

200 newton

20 newton

10 newton

2 / 68

Which of the following is the unit of momentum?

Ns

Ns^-1

kgms^-2

Nm

3 / 68

The momentum of an object of mass 4 kg, moving with velocity 100 cms^-1 is _____.

400 Ns

0.4 Ns

4 Ns

4000 Ns

4 / 68

Law of inertia is actually the _______ law of motion.

Second

Third

Fourth

First

5 / 68

A string is stretched by two equal and opposite forces F Newton each. The tension in the string is:     

½ F Newton

Zero

F Newton

2F Newton

6 / 68

______ of a body does not remain same everywhere.

Mass

All of above

Weight

Inertia

7 / 68

Kgms^-1 = _______

N

Ns

W

J

8 / 68

Which one of the following is the unit of momentum?  

kgms^-2

Ns^-1

Nm

Ns

9 / 68

What is SI unit of coefficient of friction?

No unit

Kilogram

Meter

Second

10 / 68

When force of 8 newton is applied on a body of mass 2kg then the acceleration produced will be:

160 ms^-2

16 ms^-2

4 ms^-2

0.4 ms^-2

11 / 68

The mass of a body:

Decreases when accelerated

Decreases when moving with high velocity

None of the above

Increases when accelerated

12 / 68

SI unit of momentum is:

kgm

ms

kg ms^-1

kg

13 / 68

Two bodies of masses m1 and m2 attached to the ends of an inextensible string passing over a frictionless pulling such that both move vertically. The acceleration of the body is:

\frac { { 2m }_{ 1 }{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

\frac { { m }_{ 1 }\times { m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

\frac { { m }_{ 1 }+{ m }_{ 2 } }{ { m }_{ 1 }-{ m }_{ 2 } } g

\frac { { m }_{ 1 }-{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

14 / 68

If mass of the body is doubled while keeping the force constant, then acceleration will be:

doubled

One half

Four times

One fourth

15 / 68

The acceleration produced in a moving body is always in the direction of applied ________.

Momentum

Velocity

Force

Speed

16 / 68

Rolling friction is ______ than sliding friction.

Less

Greater

Quartered

Equal

17 / 68

Motion of the rocket is an example of:

Law of conservation of energy

Weight

First law of motion

Law of conservation of momentum

18 / 68

Mass of the body is measured by:

Free Fall Apparatus

All of above

Spring balance

Physical balance

19 / 68

Isaac Newton described the laws of motion in his famous book:

Kitab-ul-Astralab

Qanoon-ul-Masoodi

Al-Manazir

Principia Mathematica

20 / 68

SI unit of force is:

Dynes

Kilogram

Pound

newton

21 / 68

F = _______.      

(P_f - P_i) / t

P_f - P_i

P_i - P_f

t / (P_f - P_i)

22 / 68

Inertia depends upon:

Net force

Mass

Force

Velocity

23 / 68

The acceleration produced by a force of 20N in a body of mass 8 kg will be:

0.4 ms^-2

2.5 ms^-2

0.4 ms^-1

2.5 ms^-1

24 / 68

Product of mass and velocity is known as:

Acceleration

Momentum

Speed

Force

25 / 68

Action and reaction are equal in magnitude but opposite in direction is called _______ law of motion.

Third

Fourth

First

Second

26 / 68

If 20 N force produces an acceleration of 5ms^-2 in a body then mass of the body will be:         

1/5 kg

1/4 kg

5 kg

4kg

27 / 68

Newton's first law of motion is valid only in the absence of:

Net force

Friction

Momentum

Force

28 / 68

N = _______.

kg ms^-1

kg m

kg s^-2

kg ms^-2

29 / 68

The laws of motion established the relationship between motion and ________.

Force

Momentum

Torque

Acceleration

30 / 68

Rate of change of momentum is equal to:

Impulse

Velocity

Acceleration

Force

31 / 68

Mass of body is 2000g, its weight on the surface of earth is:

20000 N

0.2 N

2 N

20 N

32 / 68

SI unit of momentum is:

Both Ns and kgms^-1

kgms^-1

Ns

kgms^-2

33 / 68

When a horse pulls a cart, the action is done on the:

Horse

Both Cart and Earth

Earth

Cart

34 / 68

The value of weight of a body of constant mass depends on:

Force

Momentum

'g'

Inertia

35 / 68

Walking on road is an example of _______ law of motion.

Second

First

Fourth

Third

36 / 68

The characteristic of a body which determines the magnitude of acceleration produced when a certain force acts upon it:

Inertia

Force

Weight

Mass

37 / 68

The time required to change 22 Ns momentum by a force of 44 N is:

1 s

0.5 s

2 s

3 s

38 / 68

_________ of a body is the direct measure of inertia.

Mass

All of above

Momentum

Energy

39 / 68

Momentum of a moving body depends upon:

Weight

Both mass and velocity

Velocity

Mass

40 / 68

Mass is a ______ quantity.

Derived

Scalar

Vector

Negative

41 / 68

A boy jumps out of a moving bus. There is a danger for him to fall:

opposite to the direction of motion

away from the bus

in the direction of motion

towards the moving bus

42 / 68

The force that opposes the motion of moving objects is known as:

Gravity

Weight

Repulsion

Friction

43 / 68

The value of ‘g’ on the surface of moon is 1.6ms^-2. What will be the weight of a 100kg body on the surface of the moon?

160 N

1600 N

100 N

1000 N

44 / 68

The _______ of a body always acts towards the center of the earth.

Weight

Mass

Velocity

Force

45 / 68

The characteristic of a body due to which it tends to retain its state of rest or of uniform motion is known as:

Inertia

Force

Weight

Momentum

46 / 68

If force applied on the body is doubled while keeping the mass constant then acceleration will be:

One fourth

Doubled

Four times

One half

47 / 68

Which of the following material lowers friction when pushed between metal plates?

Water

Fine marble powder

Oil

Air

48 / 68

________ of a body remains same everywhere.

Mass

Weight

Velocity

Acceleration

49 / 68

A block of mass 4kg is supported by a string. The tension in the string is:

40 N

4 N

20 N

0 N

50 / 68

If ‘m’ is the mass of an object then its weight on the surface of the Earth will be:

mg

None of these

½ mg

2mg

51 / 68

m/a

ma

a

m

52 / 68

When a force is applied on the body, _______ is produced in the body.

Energy

Acceleration

Weight

None of the above

53 / 68

Laws of motion was presented by:

Newton

Galileo

Einstein

Archimedes

54 / 68

Unit of weight is _______.

N

Nm

Kg

ms^-1

55 / 68

Quantity of motion in a body is known as:

Mass

Velocity

Momentum

Acceleration

56 / 68

_______ is the agency which changes or tends to change the state of rest or of uniform motion of a body.

Weight

Force

Momentum

Inertia

57 / 68

When a block is lying on a smooth surface, its weight is balanced by:

Inertia

Momentum

Normal reaction

Mass

58 / 68

The Force with which earth attracts a body towards its center is known as:

Mass

Inertia

Weight

Force

59 / 68

Inertia depends upon:

Velocity

Force

Net Force

Mass

60 / 68

The unit of momentum is:

kg ms^-1

kg ms

kg^-1ms^-1

kg ms^-2

61 / 68

Weight is a _______ quantity.

Vector

Negative

Scalar

Derived

62 / 68

Weight of the body is measured by:

Free Fall Apparatus

All of these

Physical Balance

Spring Balance

63 / 68

When horse pulls a cart, the action is on the:

Horse

Cart

Earth and cart

Earth

64 / 68

Quantity of matter in a body is called:

Mass

Weight

Force

Velocity

65 / 68

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is:

5 N

10 N

20 N

Zero

66 / 68

The maximum value of friction is known as the force of  ______ friction.

Limiting

Kinetic

Static

Dynamic

67 / 68

First taw of motion is also know as law of _______.

Inertia

Torque

None of these

Acceleration

68 / 68

The weight of a body of mass 10 Kg on earth will be:

1000 N

1 N

100 N

10 N

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The average score is 64%

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