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The following are very important questions of **9th Class Physics** which you can prepare and get 100% marks. **Physics** is a subject that can get marks, so it,s best to start** preparing for your exam**.

## Guess Papers of Physics for 9th Class

These important guess papers of physics are available in softcopy form here for students in the 9th Class Physics Guess Papers 2024 Punjab Board. The students can get ideas from these guess papers and can practice these guess papers for better performance in the examination. You can download the 9th physics guess paper 2024 in pdf files from here. Those questions which are most probable to ask in the board exam are given in these guess papers. The most important questions are given in these guess papers so that the students can get ready for better performance in the exam.9th Class Physics Guess Papers 2024 Punjab Board

__UNIT NO. 1__

__PHYSICAL QUANTITIES AND MEASUREMENT__

__MULTIPLE CHOICE:__

- The number of significant figures in 0.00580 km is.

- 5
- 6
- 3
- 2
- The number of base units in SI is.

- 5
- 6
- 7
- 9
- The amount of a substance in terms of number is measured in.

- Gram
- Kilogram
- Newton
- Mole
- An interval of 200 microseconds is equivalent to.

- 0.2 s
- 0.02 s
- 2 x 10
^{-4}s - 2 x10
^{-6}s - The smallest quantity among these is.

- 0.01 g
- 2 mg
- 100 g
- 5000 mg

__SHORT QUESTIONS:__

- Define base quantities.
- Write down rules to find the significant digits.
- Define base quantities and units.
- What is meant by significant figures? How many significant figures are in?
- Define physical quantities and derived quantities.
- What are vernier calipers? Write the least count of vernier calipers.
- What role SI Units have played in the development of science?

__LONG QUESTIONS__:

__NO LONG QUESTIONS IN THIS CHAPTER.__

__UNIT NO.__ __2__

__KINEMATICS.__

__KINEMATICS.__

__MULTIPLE CHOICE:__

- Falcon can fly at a speed of.

- 200 km
^{-1} - 17 km
^{-1} - 100 kmh
^{-1} - 70 kmh
^{-1} - The acceleration of a body falling down freely is approximate.

- 110 m
^{2}s^{-2} - 10 ms
^{-2} - 50 ms
^{-1} - 20 m
^{2}s^{-1} - Which of the following is a vector quantity.

- Speed
- Distance
- Displacement
- Power
- If an object is moving with constant speed then its distanceâ€“time graph will be a straight line.

- Along the time- axis
- Along distance-axis
- Parallel to time-axis
- Inclined to the time â€“axis
- By dividing the displacement of a moving body with time we obtain.

- Speed
- Velocity
- Displacement
- Distance
- 36 kmh
^{-1}is equal to.

- 20 ms
^{-1} - 25 ms
^{-1} - 50 ms
^{-1}

__SHORT QUESTIONS:__

- How is a vector represented?
- Differentiate between variable and uniform speed.
- Define speed and write its units.
- Convert the 50 kmh
^{–}1 speed of a body into ms^{-1} - What is the difference between positive acceleration and negative acceleration?
- Uniform velocity
- Define uniform speed and uniform velocity
- Define gravitational acceleration and write its value as SI units.
- Write the equation of motion for uniform acceleration motion.
- A train starts from rest with an acceleration of 0.5 ms
^{-2}. Find its speed in Kmh^{-1}. When it has moved through 100 m. - How can vector quantities be represented graphically?

__LONG QUESTIONS/NUMERICAL:__

- Example 2.5
- Derive second equation
- Prove with the help of graph Vf â€“ Vi + at
- Prove it graphically by diagram s = vit + Â½ at
- A car has a velocity of 10 ms-1 if acceleration is at 0.75 for half a minute. Find the distance traveled during this time and the final velocity of the car.
- A stone is dropped from the top of a tower. The stone hits the ground after 5 seconds. Find (i) The height of the tower and (ii) The velocity with which the above hits the ground.
- Drive the third equation of motion.

__CHAPTER NO.3__

__DYNAMICS__

__DYNAMICS__

**MULTIPLE CHOICE:**

**MULTIPLE CHOICE:**

- The equation of momentum is.

- Momentum
- Friction
- Power
- Work
- The coefficient of friction meo between the tire and wet road is.

- Q.2
- 0.6
- 0.8
- 1
- The first law of Newton is applicable in the absence of which of the following?

- Force
- Net force
- Friction
- Momentum

__SHORT QUESTIONS__:

- Define Newtonâ€™s second law of motion and give an equation.
- Define Inertia and momentum.
- State Newtonâ€™s third law of motion and write two examples.
- Write the difference between Mass and Weight.
- When a gun is fired, it recoiled why.
- Give two examples of the law of conservation of momentum.
- Why rolling friction is less than sliding friction?
- What is Atwood Machine? Give its one use. Define force and its unit.

__LONG QUESTIONS:__

- How much time is required to change 22 Ns momentum in a body by a force of 20 N?
- State Newtonâ€™s first law of motion. Why is it called the law of inertia?
- Define the rate of change of momentum and also drive its equation.
- State the second law of motion and drive equation f = ma.
- A body has a weight of 20 N. How much force is required to move it vertically upward with an acceleration of 2 ms
^{-2}

__CHAPTER NO.4.__

__TURNING EFFECT OF FORCES.__

__MULTIPLE CHOICE:__

- The number of perpendicular components of a vector is.

- 1
- 2
- 3
- 4
- The center of gravity of an irregularly shaped body can be found with the help of.

- Gravity
- Merle rod
- Plump line
- Screw gauge.
- Two equal but unlike parallel forces having different lines of action produce.

- A torque
- A couple
- Equilibrium
- Neutral aquarium.
- The number of vectors that can be added by head to tall rule is.

- 2
- 3
- 4
- Any number
- If 10 Newton force is making an angle of 30 o with the x-axis then the value of horizontal component

- 4 N
- 5 N
- 7 N
- 0.7 N
- Racing cars made stable by.

- Increasing their speed
- Decreasing their mass
- Lowering their center of gravity
- Decreasing their width

__SHORT QUESTIONS:__

- What is the resultant of force?
- What is the rigid body?
- Define the axis of rotation.
- When a body is said to be in equilibrium.

__LONG QUESTIONS:__

__LONG QUESTIONS:__

- What is resolution of force? Resolve of force F into its perpendicular components.
- Find a force from its perpendicular component by using a figure.
- Find the perpendicular components of a force of 50 N making an angle of 30 o with x-axis.

__CHAPTER NO. 5 __

__CHAPTER NO. 5__

__GRAVITATION:__

### MULTIPLE CHOICE:

- The value of gravitational field strength near the surface of earth is.

- 20 N kg
- 30 N kg
- 5 N kg
- 10 N kg
- Mass of the earth is

- Increase in mass of the body
- Increase in altitude
- Decrease in attitude
- None of the above
- The value of g on moonâ€™s surface is 1.6 ms-2. What will be the weight of a 100 kg body on the surface of the moon?

- 100 N
- 160 N
- 1000 N
- 1600 N

__SHORT QUESIOTNS:__

__SHORT QUESIOTNS:__

- What do you known about G? Also write its value.
- Define mass of earth.
- Why we cannot fast gravitational force around us?
- Define gravitational field.
- Give the orbital speed formula for artificial satellite.
- Define force of gravitation and give one example
- What is the height and speed of Geo stationary satellite from the surface of the earth.
- State the law of gravitation and write its formula.

__LONG QUESTIONS:__

- What do you mean by artificial satellite?

__CHAPTER NO.6__

__WORK AND ENERGY.__

__MULTIPLE CHOICE:__

- The SI unit of Power.

- Newton
- Watt
- Joule
- Coulomb
- The energy stored in a dam is.

- Electric energy
- Potential energy
- Chemical energy
- Nuclear energy
- In Einstein â€˜s mass energy equation, c is the

- Energy
- Torque
- Power
- Momentum
- In a dam the water energy is called.

- Heat energy
- Electrical energy
- G.P.E
- Mechanical energy
- Einstein mass energy equation is.

- J
- N
- Ns
- m
- Work done is maximum when angle between force and displacement is.

- 45
^{o} - 0
^{o} - 60
^{o} - 90
^{o}

__SHORT QUESTIONS:__

- Define work. What is its SI unit?
- Define K.E. and derive its relation.
- A machine does 4 joule of work in 2 sec. Calculate its work.
- Define Potential energy and derive its relation.
- Define energy. Give two types of mechanical energy.
- Define unit of work.
- What is meant by the efficiency of a system?
- Define power and watt.
- What is magma?
- Write a brief note on Einstein mass energy equation.
- State law of conservation of energy.

__LONG QUESTIONS:__

__LONG QUESTIONS:__

- Explain two major renewable sources of energy.
- A motor boat moves at a steady speed of 4 ms-1 water resistance acting on it is 4000 N calculate the power of its engine.
- Explain how energy is obtained from solar house heating and solar cells.
- Calculate the power of pump which can lift 70 kg of water through a vertical height 16 meters in 10 seconds. Also find the power of the pump, convert its power into horse power.
- Explain how energy is obtained from solar house heating and solar cells.
- Calculate the power of pump which can lift 70 kg of water through a vertical height 16 meters in 10 seconds. Also find the power of the pump, convert its power into horse power.
- A man pulls a block with a force of 300 N through 50 m in 60 s. Find power used by him to pull the block.
- A 50 kg man moved 25 steps up in 20 s. Find his power if each slop is 16 cm high.

__UNIT NO. 7__

__PROPERTIES OF MATTER.__

**MULTIPLE CHOICE:**

- One litre is equal to.

- 1 kgm
^{-1} - 100 kgm
^{-1} - 10
^{-1}m^{-1} - 10
^{-1}m^{-1} - SI unit of pressure is.

- N
- Nm
- J
- Nm-1
- In SI system, unit of density

- Kgm-1
- K gm-2
- Kg m-3
- Kg m
- In which of the following state molecules do not leave their position.

- Solid
- Liquid
- Gas
- Plasma
- Pascal is equal to.

- 10
^{-4}Nm^{-2} - 1 Nm
^{-2} - 10
^{2}Nm^{-2} - 10
^{3}Nm^{-2}

__SHORT QUESTIONS:__

- What is barometer?
- State Pascalâ€™s law
- Difference between Stress and Strain.
- Define the term pressure. Give its S.I.unit.
- Elasticity and Stress?
- elasticity?
- What is Hookâ€™s law? What is meant by elastic limit?
- How does vacuum cleaner work?
- Give three application of Pascalâ€™s law.
- Define stress with its unit.
- Define Youngâ€™s modulus.
- Difference between Strain and Tensile of strain.
- Write two examples of applications of Pascalâ€™s law.
- What is meant by atmospheric pressure?
- State Archimedes principle.
- State Hookâ€™s law. What is meant by elastic limit?

__LONG QUESTIONS__:

- The mass of 200 cm3 of stone in 500 g. Find as density
- A cube of glass of 5 cm side and mass 306 g has a cavity inside it. If the density of glass is 2.55 gcm-3. Find the volume of the cavity.
- A wooden block measuring 40 cm x 10 cm x 5 cm has a mass 850 g. Find the density of wood.
- The density of air is 1.3 kgm-1. Find of air in a room measuring 8m x 5m x 4m

__CHAPTER NO. 8__

__CHAPTER NO. 8__

__THERMAL PROPERTIES OF MATTER.__

**MULTIPLE CHOICE:**

- Rate of flow of heat is equal to.

- Copper
- Ice
- Water
- Mercury

__SHORT QUESTONS:__

__SHORT QUESTONS:__

- Define Temperature.
- How evaporation differs from vaporization.
- Define latent heat of vaporization.
- How temperature determines the direction of flow of heat.
- Thermal equilibrium.
- co-efficient of linear thermal expansion and what its SI unit is.
- â€œVolume thermal expansionâ€™ and â€œtemperature co-efficient of volume expansion.
- Latent Heat of fusion.
- What is meant by specific heat?
- Write any two uses of thermal expansion in our daily life.
- What is meant by bimetallic strip

__LONG QUESTIONS:__

__LONG QUESTIONS:__

- Define linear thermal expansion in solids. Derive its formula.

- Explain the liner thermal expansion is solids.

__CHAPTER NO.9__

__TRANSFER OF HEAT.__

__MULTIPLE CHOICE:__

- The way by which transfer of heat takes place are.

- 1
- 2
- 3
- 4
- The units of thermal conductivity to.

- Wmk
- Wm
^{-1}k^{-1} - Wmk
^{-1} - Wm
^{2}k^{-1} - Thermal conductivity of air is.

- 0.08
- 0.03
- 0.2
- 0.026
- Global warming is due to a gas.

- Oxygen
- Carbon di oxide
- Carbon mono oxide
- Chlorine
- In solids, heat is transferred by.

- Radiation
- Conduction
- Convection
- Absorption
- What happens to the thermal conductivity of a watt if its thickness is doubled?

- Becomes double
- Remain the same
- Becomes half
- Become one fourth
- Metals are good conductor of heat due to.

- Free electron
- Bigger sure of their momentum
- Smaller size of their molecules
- Rapid vibration of their atoms
- False celling is done to.

- Lower the height of celling
- Keep the root clean
- Cool the room
- Insulate the celling.
- Rooms are heated using gas heaters by.

- Conduction only
- Convection and radiation
- Radiation only
- Convection only
- Land Breeze blows from.

- Land Breeze blows from
- Sea to land during might
- Sea to land during the day
- Land to sea during the day

__SHORT QUESTIONS:__

- What is meant by transfer of heat? Write way by which transfer of heat takes place.
- Write names of any two birds who are expert thermal climbers.
- Where is convection currents used?
- Mention the use of Leslie cube
- Define radiation. Write down the factors at which the rate of emission of radiations depends.
- Why are the metals good conductors of heat?
- What is meant by gliding?
- What causes of glider to remain in air?
- Define Thermal conductivity and write its equation.
- Define convecti
- land breeze and sea breeze.
- Describe relation of radiation of heat and surface are.
- Write methods of heat transfer.

__LONG QUESTIONS:__

- What measures do you suggest to conserve energy in houses?
- Define radiations how heat reaches us from sun?
- Write use of Leslie Cube. Explain how various surfaces of it can be compared.
- Explain the reasons of sea breeze blows during the day and land breeze blows during night.

## 9th Class Physics Guess Papers 2024

These guess papers are very beneficial and made especially for 9th class science students. 9th Class Physics Guess Papers 2024. These guess papers are free to download. We are providing you with these guess papers so that you can get good marks on the board exam for the 9th physics. Our first priority is to provide the best material to our students for preparation. The students can check and download the 9th class physics guess paper in pdf from our website ilmWap.com. The students should surely make practice these guess papers before going to the exam.