## Physics Notes for 9th Class Chapter-03

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# Dynamics:

The most interesting and important Subject Physics of 9th Class Chapter-03. Student want to know the important Questions and  physics notes for 9th class , to prepare it according to BISE Punjab. We are providing the Solution of Student Problems.

## Here are important MCQs for 9th Class, Physics Chapter # 03

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Physics Ch-03, 9th

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1 / 70

When horse pulls a cart, the action is on the________

2 / 70

Friction in the human joints is much reduced due to the presence of_________

3 / 70

When a block is laying on a smooth surface, its weight is balanced by______

4 / 70

Law of inertia is actually the _________ law of motion.

5 / 70

The force with which earth attracts a body towards its center is known as ________

6 / 70

Value of coefficient of static friction is usually ------------- than coefficient of kinetic friction.

7 / 70

Mass of the body is measured by___________

8 / 70

There are _____ cases of motion of the body hanging with the help of rope.

9 / 70

Rolling friction is ______________ than Sliding friction.

10 / 70

Quantity of motion in a body is known as____________

11 / 70

The Rotation of water sprinkler is an example of ___________law of motion.

12 / 70

The characteristic of a body which determines the magnitude of acceleration produced when a certain force act upon it___________

13 / 70

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

14 / 70

Which of the following is the unit of momentum?

1. Nm
2. kgms-2
3. Ns
4. Ns-1

(Which Option is Correct ?)

15 / 70

The__________ of a body always acting towards the center of the earth.

16 / 70

The weight of a body of mass 10kg on earth will be __________

17 / 70

Quantity of matter in a body is called _______

18 / 70

Inertia depends upon______________

19 / 70

Coefficient of friction does not depend upon the __________ between two surfaces.

20 / 70

A spider web remains intact due to____________

21 / 70

The front sides of high-speed vehicles, aero-planes and ships are shaped wedge like to reduce_________

22 / 70

Newton’s first law of motion is valid only in the absence of ___________

23 / 70

The force which resists the motion of one surface on another surface is known as_________

24 / 70

If force applied on the body is double while keeping the mass constant, then acceleration will be_____

25 / 70

When a force of 8-Neton is applied on a body of mass 2-kg, then the acceleration produced will be_______

1. 16ms-2
2. 4ms-2
3. 0.4ms-2
4. 160ms-2

(Which is Correct Option)

26 / 70

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

27 / 70

The law of motion is also known as law of ___________

28 / 70

When an object is in motion then the force of friction is known as _________ friction.

29 / 70

Value of coefficient of friction depends upon___________

30 / 70

Friction of liquids is _____________ than friction of solids.

31 / 70

When object is at rest, the force of friction is known as_________friction.

32 / 70

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

33 / 70

Static friction is___________ than kinetic friction.

34 / 70

Kgms-1 = ____________

35 / 70

When a force is applied on the body ___________ is produced in the body.

36 / 70

Motion of the rocket is an example of________

37 / 70

ST unit of Momentum is_______________

1. Kgms-2
2. Ns
3. Kems-1

Which Option is Correct?

38 / 70

The 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 bodies is_____

(Which Option is Correct ?)

39 / 70

The value of weight of a body of constant mass depends on________

40 / 70

The acceleration produced in a moving body is always in the direction of applied______

41 / 70

_______ of a body is the direct measure of inertia.

42 / 70

The mass of a body_________

43 / 70

1-N = _________

1. Kgms-2
2. kgms-1
3. kgm2s-1
4. kg2ms-2

(which is Correct Option ?)

44 / 70

Issac Newton described the laws of motion in his famous book______

45 / 70

Rate of change of momentum is equal to__________

46 / 70

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

47 / 70

The laws of motion are also known as law of __________

48 / 70

Laws of Motion was presented by______

49 / 70

Sliding friction is commonly converted into Rolling friction by the use of_________

50 / 70

Action and reaction are equal in magnitude but opposite in direction is known as ______ law of motion.

51 / 70

Weight is a _________ quantity.

52 / 70

When a block is hanging with the help of a rope then weight of the body is balanced by_____

53 / 70

Weight of the body is measured by_______

54 / 70

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

55 / 70

Unit of weight is ________

56 / 70

__________ of a body remains same everywhere.

57 / 70

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

58 / 70

Direction of the rate of change of momentum is in the direction of___________

59 / 70

The coefficient of friction has ____________ unit.

60 / 70

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

61 / 70

The maximum value of static friction is known as __________ friction.

62 / 70

_________ of a body does not remain same everywhere.

63 / 70

When air is released from an inflated balloon, it shoots off is an example of_____

64 / 70

SI unit of force is ______________

65 / 70

The law of motion is also known as law of ___________

66 / 70

Mass is a __________ quantity

67 / 70

Product of mass and velocity is known as___________

68 / 70

The tension produced when one body moves vertically and the other moves horizontally is __________ as compared to the tension produced when both bodies move vertically

69 / 70

The rolling friction is about __________ times smaller than sliding friction.

70 / 70

Momentum of a moving body depends upon its___________

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MCQs PHYSICS 9TH CHAPTER # 03

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### NUMERICAL PHYSICS 9TH CHAPTER # 03

LONG QUESTIONS PHYSICS 9TH CHAPTER # 03

TEXT BOOK EXERCISE SOLUTION PHYSICS 9TH CHAPTER # 03

### Physics Notes, Numerical for Class 9th

If your are talking about the Study material of Class 9th Physics Notes chapter-03, Physics Notes for 9th Class Chapter-03, eStudent.pk is providing same helpful content against each chapter of Physics Class 9 notes pdf downloadable format of PTB book. For each chapter  there are short questions, long question, multiple-choice questions, and numerical. Similarly, in the case of extra material, there are long questions, short questions, and multiple-choice questions. So, every student can check these notes and prepare for exams.

How did we prepare from these notes? any Student of 9th class should prepared all the long question of each chapter first and practiced all the numerical as well in good grip. Then he should skimmed through all the multiple-choice question and short questions of same chapter. That should be enough for him to prepare a chapter and secure good marks in exams. All reader should use this technique if you like this.

## Chapter wise PDF Notes / Problems / Numerical Solution of Physics

Chapter-01 – Physical Quantities and Measurements

Chapter-02 -Kinematics

Chapter-03 – Dynamics

Chapter-04 – Turning Effect of Forces

Chapter-05 – Gravitation

Chapter-06 – Work and Energy

Chapter-07 – Properties of Matter

Chapter-08 – Thermal Properties of Matter

Chapter-09 – Transfer of Heat

Pairing Scheme for 2021 – Physics 9th Class