SUBJECT : PHYSICS - SSA Punjab

3. On driving the scooter for a long time, the air pressure in the tyresslightly increases. Why?4. When a gas is suddenly compressed, temperature of a gas rises. Why?5. State Boyle’s law and Charles’s law. Why they are not applicable for allreal gases at all temperatures?6. What is the basic assumption of kinetic theory of gases?7. On their basis, derive an expression for the pressure exerted by an idealgas.8. Show that r.m.s speed of the molecules of a gas is directly proportional tothe square root of the absolute temperature of the gas.UNIT -XOSCILLATIONS AND WAVES2 marks questions1. Which properties of a medium are responsible for propagation of wavesthrough it?2. What is range of frequency of audible sound?3. Can two persons hear each other on moon?4. Distinguish between damped and undamped oscillation.5. Will a pendulum clock gain or lose time, when taken to the top of themountain?6. Why pendulum clocks are not suitable for spaceships?7. Explain why transverse mechanical waves cannot be propagated inliquids and gases?8. Explain why longitudinal waves can be propagated in solids, liquids andgases?9. Why does sound travel faster in steel than in air?10. What are nodes and antinodes?11. On what factors do the frequency of tuning fork depends?12. What is Doppler Effect?What is red shift?13. How can beats see in darkness? Explain5 marks questions1. Show that the oscillations of a simple pendulum are simple harmonic.2. What are beats? How are they produced?24