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

174

Class 9 Physics
Unit 3
Practice MCQs Test No 1

1 / 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 { { 2m }_{ 1 }{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

\frac { { m }_{ 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

2 / 14

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

20000 N

0.2 N

2 N

20 N

3 / 14

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

Water

Air

Oil

Fine marble powder

4 / 14

What is SI unit of coefficient of friction?

Meter

No unit

Second

Kilogram

5 / 14

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

Zero

10 N

5 N

20 N

6 / 14

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

2F Newton

F Newton

Zero

½ F Newton

7 / 14

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

4kg

1/4 kg

1/5 kg

5 kg

8 / 14

Which one of the following is the unit of momentum?  

Nm

Ns^-1

Ns

kgms^-2

9 / 14

Which of the following is the unit of momentum?

Ns

Nm

kgms^-2

Ns^-1

10 / 14

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

opposite to the direction of motion

in the direction of motion

away from the bus

towards the moving bus

11 / 14

Inertia depends upon:

Velocity

Net force

Force

Mass

12 / 14

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

Earth and cart

Horse

Earth

Cart

13 / 14

The mass of a body:

None of the above

Increases when accelerated

Decreases when moving with high velocity

Decreases when accelerated

14 / 14

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

Force

Net force

Momentum

Friction

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The average score is 37%

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Practice MCQs Test No 2

111

Class 9 Physics
Unit 3
Practice MCQs Test No 2

1 / 14

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

0.4 Ns

400 Ns

4 Ns

4000 Ns

2 / 14

m

a

m/a

ma

3 / 14

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

20 newton

10 newton

200 newton

2 newton

4 / 14

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

Cart

Horse

Earth

Both Cart and Earth

5 / 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^-1

0.4 ms^-2

2.5 ms^-2

6 / 14

N = _______.

kg ms^-2

kg s^-2

kg m

kg ms^-1

7 / 14

SI unit of momentum is:

kg ms^-1

ms

kgm

kg

8 / 14

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

mg

2mg

None of these

½ mg

9 / 14

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

4 N

40 N

20 N

0 N

10 / 14

F = _______.      

P_i - P_f

P_f - P_i

(P_f - P_i) / t

t / (P_f - P_i)

11 / 14

The unit of momentum is:

kg ms^-1

kg ms

kg ms^-2

kg^-1ms^-1

12 / 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?

1600 N

1000 N

100 N

160 N

13 / 14

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

3 s

2 s

1 s

0.5 s

14 / 14

Inertia depends upon:

Mass

Force

Velocity

Net Force

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The average score is 42%

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Practice MCQs Test No 3

89

Class 9 Physics
Unit 3
Practice MCQs Test No 3

1 / 15

SI unit of force is:

Dynes

Kilogram

newton

Pound

2 / 15

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

Force

Torque

Momentum

Acceleration

3 / 15

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

Inertia

Acceleration

Torque

None of these

4 / 15

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

Four times

One fourth

Doubled

One half

5 / 15

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

160 ms^-2

0.4 ms^-2

4 ms^-2

16 ms^-2

6 / 15

Laws of motion was presented by:

Einstein

Newton

Galileo

Archimedes

7 / 15

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

Qanoon-ul-Masoodi

Al-Manazir

Principia Mathematica

Kitab-ul-Astralab

8 / 15

_________ of a body is the direct measure of inertia.

All of above

Mass

Momentum

Energy

9 / 15

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

Weight

Inertia

Momentum

Force

10 / 15

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

One fourth

doubled

Four times

One half

11 / 15

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

Speed

Velocity

Momentum

Force

12 / 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

Inertia

Force

13 / 15

Law of inertia is actually the _______ law of motion.

Third

First

Fourth

Second

14 / 15

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

Acceleration

Energy

None of the above

Weight

15 / 15

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

Second

Third

Fourth

First

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The average score is 51%

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Practice MCQs Test No 4

74

Class 9 Physics
Unit 3
Practice MCQs Test No 4

1 / 15

Weight of the body is measured by:

Physical Balance

Free Fall Apparatus

Spring Balance

All of these

2 / 15

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

Weight

Mass

Force

Velocity

3 / 15

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

Force

Mass

Weight

Inertia

4 / 15

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

Force

Inertia

'g'

Momentum

5 / 15

______ of a body does not remain same everywhere.

Mass

Weight

All of above

Inertia

6 / 15

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

Weight

Mass

Force

Inertia

7 / 15

________ of a body remains same everywhere.

Acceleration

Velocity

Mass

Weight

8 / 15

Weight is a _______ quantity.

Negative

Vector

Scalar

Derived

9 / 15

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

Fourth

Third

First

Second

10 / 15

Quantity of matter in a body is called:

Force

Weight

Mass

Velocity

11 / 15

Unit of weight is _______.

Kg

N

ms^-1

Nm

12 / 15

Mass of the body is measured by:

All of above

Physical balance

Free Fall Apparatus

Spring balance

13 / 15

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

100 N

1 N

10 N

1000 N

14 / 15

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

Inertia

Mass

Momentum

Normal reaction

15 / 15

Mass is a ______ quantity.

Derived

Negative

Scalar

Vector

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The average score is 44%

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Practice MCQs Test No 5

68

Class 9 Physics
Unit 3
Practice MCQs Test No 5

1 / 10

Motion of the rocket is an example of:

First law of motion

Law of conservation of momentum

Law of conservation of energy

Weight

2 / 10

Kgms^-1 = _______

N

J

Ns

W

3 / 10

SI unit of momentum is:

Both Ns and kgms^-1

kgms^-2

Ns

kgms^-1

4 / 10

Momentum of a moving body depends upon:

Velocity

Both mass and velocity

Weight

Mass

5 / 10

Quantity of motion in a body is known as:

Velocity

Acceleration

Mass

Momentum

6 / 10

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

Weight

Friction

Gravity

Repulsion

7 / 10

Rolling friction is ______ than sliding friction.

Quartered

Equal

Greater

Less

8 / 10

Product of mass and velocity is known as:

Speed

Force

Momentum

Acceleration

9 / 10

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

Limiting

Static

Kinetic

Dynamic

10 / 10

Rate of change of momentum is equal to:

Acceleration

Force

Velocity

Impulse

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The average score is 49%

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Challenge MCQs Test

200

---

Class 9 Physics
Unit 3
Full Chapter Challenge Test

1 / 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?

1600 N

100 N

160 N

1000 N

2 / 68

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

One half

Four times

Doubled

One fourth

3 / 68

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

20000 N

2 N

20 N

0.2 N

4 / 68

Quantity of motion in a body is known as:

Momentum

Acceleration

Velocity

Mass

5 / 68

Inertia depends upon:

Mass

Force

Velocity

Net Force

6 / 68

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

One half

One fourth

Four times

doubled

7 / 68

Which one of the following is the unit of momentum?  

Ns

Ns^-1

kgms^-2

Nm

8 / 68

F = _______.      

(P_f - P_i) / t

t / (P_f - P_i)

P_f - P_i

P_i - P_f

9 / 68

______ of a body does not remain same everywhere.

Weight

Inertia

All of above

Mass

10 / 68

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

2.5 ms^-1

2.5 ms^-2

0.4 ms^-1

0.4 ms^-2

11 / 68

Mass is a ______ quantity.

Scalar

Derived

Vector

Negative

12 / 68

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

Force

Velocity

Weight

Mass

13 / 68

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

Torque

None of these

Inertia

Acceleration

14 / 68

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

Water

Oil

Fine marble powder

Air

15 / 68

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

Force

Inertia

Weight

Mass

16 / 68

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

Momentum

Torque

Force

Acceleration

17 / 68

The unit of momentum is:

kg ms^-2

kg ms^-1

kg^-1ms^-1

kg ms

18 / 68

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

½ mg

2mg

None of these

mg

19 / 68

Weight is a _______ quantity.

Scalar

Vector

Negative

Derived

20 / 68

_________ of a body is the direct measure of inertia.

Energy

Mass

Momentum

All of above

21 / 68

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

100 N

1000 N

10 N

1 N

22 / 68

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

Third

Fourth

Second

First

23 / 68

m/a

m

ma

a

24 / 68

Weight of the body is measured by:

Physical Balance

Free Fall Apparatus

Spring Balance

All of these

25 / 68

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

400 Ns

0.4 Ns

4000 Ns

4 Ns

26 / 68

Rolling friction is ______ than sliding friction.

Equal

Quartered

Less

Greater

27 / 68

Quantity of matter in a body is called:

Mass

Velocity

Weight

Force

28 / 68

Which of the following is the unit of momentum?

Ns

Nm

kgms^-2

Ns^-1

29 / 68

________ of a body remains same everywhere.

Velocity

Acceleration

Mass

Weight

30 / 68

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

Momentum

Velocity

Force

Speed

31 / 68

SI unit of momentum is:

kgm

kg ms^-1

ms

kg

32 / 68

Unit of weight is _______.

Nm

Kg

N

ms^-1

33 / 68

Laws of motion was presented by:

Archimedes

Galileo

Einstein

Newton

34 / 68

Rate of change of momentum is equal to:

Impulse

Force

Acceleration

Velocity

35 / 68

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

Momentum

Force

Inertia

'g'

36 / 68

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

Inertia

Force

Weight

Momentum

37 / 68

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

0.4 ms^-2

4 ms^-2

160 ms^-2

16 ms^-2

38 / 68

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

Fourth

Second

Third

First

39 / 68

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

10 newton

20 newton

2 newton

200 newton

40 / 68

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

Kinetic

Dynamic

Static

Limiting

41 / 68

Law of inertia is actually the _______ law of motion.

Second

First

Third

Fourth

42 / 68

Momentum of a moving body depends upon:

Velocity

Weight

Both mass and velocity

Mass

43 / 68

Inertia depends upon:

Velocity

Net force

Force

Mass

44 / 68

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

None of the above

Acceleration

Weight

Energy

45 / 68

SI unit of force is:

newton

Dynes

Pound

Kilogram

46 / 68

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

Principia Mathematica

Qanoon-ul-Masoodi

Al-Manazir

Kitab-ul-Astralab

47 / 68

The mass of a body:

None of the above

Decreases when accelerated

Decreases when moving with high velocity

Increases when accelerated

48 / 68

Product of mass and velocity is known as:

Speed

Acceleration

Momentum

Force

49 / 68

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

1/4 kg

5 kg

1/5 kg

4kg

50 / 68

Mass of the body is measured by:

Spring balance

All of above

Free Fall Apparatus

Physical balance

51 / 68

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

40 N

20 N

4 N

0 N

52 / 68

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

Cart

Both Cart and Earth

Earth

Horse

53 / 68

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

Force

Inertia

Weight

Mass

54 / 68

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

10 N

Zero

5 N

20 N

55 / 68

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

Repulsion

Weight

Friction

Gravity

56 / 68

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

Horse

Cart

Earth

Earth and cart

57 / 68

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

3 s

1 s

2 s

0.5 s

58 / 68

What is SI unit of coefficient of friction?

Meter

No unit

Kilogram

Second

59 / 68

SI unit of momentum is:

kgms^-1

Both Ns and kgms^-1

kgms^-2

Ns

60 / 68

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

Friction

Force

Momentum

Net force

61 / 68

Kgms^-1 = _______

W

Ns

N

J

62 / 68

Motion of the rocket is an example of:

Law of conservation of energy

Weight

Law of conservation of momentum

First law of motion

63 / 68

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

2F Newton

F Newton

½ F Newton

Zero

64 / 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 }-{ m }_{ 2 } }{ { m }_{ 1 }+{ m }_{ 2 } } g

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

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

65 / 68

N = _______.

kg m

kg ms^-1

kg s^-2

kg ms^-2

66 / 68

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

towards the moving bus

opposite to the direction of motion

away from the bus

in the direction of motion

67 / 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

68 / 68

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

Normal reaction

Momentum

Inertia

Mass

Your score is

The average score is 42%

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