9th Class Physics Past Paper 2022
Note: Physics 1st Time Paper of 9th Class.
Group-I (Subjective) 40 Marks
Part– I
Q.2 Write short answers to any FIVE (5) questions:
(i) Define prefixes and give two examples.
(ii) Differentiate between rest and motion.
(iii) Define force and write down its SI unit.
(iv) State the law of conservation of momentum.
(v) What is meant by base units and derived units?
(vi) Write any two differences between mass and weight.
(vii) Define random motion and write down one example.
(viii) Write down the SI units of temperature, electric current, force, and electric charge.
Q.3 Write short answers to any Four (4) questions:
(i) Define Torque and Moment.
(ii) What is meant by geostationary orbit?
(iii) Describe the law of gravitation and Newton’s third law of motion.
(iv) How does the value of ‘g’ vary with altitude?
(v) Define Work and its SI unit.
(vi) Define Biomass Energy and Geothermal Energy.
(vii) What is meant by Power and Watt?
Q.4 Write short answers to any Four (4) questions:
(i) Why does the atmospheric pressure vary with altitude?
(ii) State Hooke’s Law.
(iii) Define pressure and write its formula.
(iv) Differentiate between temperature and heat.
(v) Define latent heat of fusion.
(vi) Conduction of heat does not take place in gases, give reasons.
(vii) What is meant by Convection Current?
(viii) Write two uses of good conductors.
PART-II
Note: Attempt any TWO questions.
Q.5
(a) Derive the second equation of motion with the help of the speed-time graph.
(b) How much force of friction is required between a wooden block of mass 5 kg and a horizontal marble floor? The coefficient of friction between wood and marble is 0.6.
Q.6
(a) What is meant by Kinetic Energy? Derive its equation.
(b) A force is acting on a body making an angle of 30° with the horizontal. The horizontal component of the force is given.
Q.7
(a) Derive an equation for the pressure at some depth in a liquid.
(b) How much heat is required to increase 0.5 kg of water from 10°C to 65°C?