9th Class Physics Notes English Medium

Important 9th Class Physics Notes English Medium written by Honorable Sir Adnan Haider Suib. These notes are very helpful in the preparation of 9th Class Physics Notes English Medium these are according to the paper patterns of all Punjab boards.

• Here are the detailed 9th physics notes english medium to help you prepare for your exams.
• Chapter No: 1  Physical Quantities and Measurement
• The number of base unit is SI is:
• Which one of the following unit is not a derived unit?
• Amount of a substance in terms of numbers is measured in:
• A student claimed the diameter of a wire as 1.032cm using Vernier Calipers. Unto what extent do you agree with it?
• Significant figures in an expression are:
• What is the difference between base quantities and derived quantities? Give three examples in each case.
• Base Units: 
• Estimate your age in seconds.
• What role Si units have played in the development of science?
• What is meant by Vernier constant?
• Why is the use of zero error necessary in a measuring instrument?
• Chapter No: 2  Kinematics
• A body has translatory motion if it moves along a:
• The motion of a body about an axis is called:
• Which of the following is a vector quantity?
• If an object is moving with constant speed then its distance time graph will be a straight line:
• Significant figures in an expression are:
• A straight line parallel to time axis on a distance time graph tells that the object is:
• Explain translatory motion and give examples of various types of translatory motion.
• Define the terms speed, velocity, and acceleration.
• By Reading 9th class physics notes english medium pdf explore detailed explanations and examples to enhance your understanding.
• Differentiate between the following:  (a)  Rest and motion. (b) Circular motion and rotatory motion. (c)  Distance and displacement. (d) Speed and velocity. (e) Linear and random motion. (f) Scalars and vectors.
• Chapter No: 3  Dynamics
• Newton’s first law of motion is valid only in the absence of:
• Inertia depends upon:
• A boy jumps out of a moving bus. There is a danger for him to fall:
• If an object is moving with constant speed then its distance time graph will be a straight line:
• A string is stretched by two equal and opposite forces 10N each. The tension in the string is:
• A straight line parallel to time axis on a distance time graph tells that the object is:
• Explain translatory motion and give examples of various types of translatory motion.
• What is the law of inertia?
• What is the difference between? (a) Mass and weight.    (b)  Action and reaction. (c)  Sliding friction and rolling friction.
• Chapter No: 4  Turning Effect of Forces
• Two equal but unlike parallel forces having different lines of action produce:
• The number of forces that can be added by head to tail:
• The Number of perpendicular components of a force is: 
• A force of 10N is making an angle of 30o with the horizontal. It's horizontal the component will be:
• A body is in equilibrium when its:
• A straight line parallel to time axis on a distance time graph tells that the object is:
• Define the following. (a) Resultant vector    (b) Torque     (c) Centre of mass     (d) Centre of gravity 
• How head to head-to-tail rule help to find the resultant forces?
• When a body is said to be in equilibrium?
• Chapter No: 5  Gravitation
• Earth’s gravitational force of attraction vanishes at:
• Value of g increases with the:
• The value of g at a height one Earth’s radius above the surface of the Earth is: 
• What is meant by the force of gravitation?
• What is a field force?
• Do you attract the Earth or the Earth attracts you?
• Which one is attracting with a larger force? You or the Earth.
• Chapter No: 6  Work and Energy
• The work done will be zero when the angle between the force and the distance is:
• If the direction of motion of the force is perpendicular to the direction of motion of body, then work done will be:
• The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be?
• Define work. What is its SI unit?
• Why do we need energy?
• When does a force do work? Explain.
• Chapter No: 7  Properties of Matter
• In which of the following state molecules do not leave their position?
• Which of the substance is the highest one?
• SI unit of pressure is Pascal, which is equal to:
• How kinetic molecular model of matter is helpful in differentiating various states of matter?
• What is meant by density? What is its SI unit?
• Does there exist a fourth state of matter? What is that?
• Chapter No: 8  Thermal properties of matter
• Water freezes at:
• Normal human body temperature is:
• Mercury is used as thermometric material because it has:
• Why does heat flow from a hot body to a cold body?
• What is meant by the internal energy of a body?
• Define the terms heat and temperature.
• How does heating affect the motion of molecules of a gas?
• Chapter No: 9  Transfer of Heat
• In solids, heat is transferred by:
• What happens to the thermal conductivity of a wall if its thickness is doubled?
• Metals are good conductor of heat due to the:
• Why metals are good conductors of heat?
• Why transfer of heat in fluids take place by convection?
• Why conduction of heat does not take place in gases?