PHYSICS

Question Bank Class-XI WAVES 1. Which properties of a medium are responsible for propagation of waves through it? 2.  Which characteristics of the medium, determine the velocity of longitudinal sound waves in a medium? How will velocity of sound be affected at high altitude? 3.  Can transverse waves be produced in air? 4. What type of waves is produced on water surface? 5.  Why cannot astronauts on the moon talk to each other as on earth? 6. An explosion occurs inside a lake. What type of waves is produced inside the water? 7.  In which gas -H 2 or O 2 will sound travel with greater speed under given conditions of temperature and pressure? 8. How is energy transmitted in wave motion? 9. Sound can be heard over longer distance on a rainy day. Why? 10. The velocity of sound is generally greater in solids than in gases at N.T.P Why? 11. Frequency is the most fundamental property of a wave .Why? 12. What are the requisites for the propagation of a wave throug

QUESTION BANK FOR UNIVERSITY OF KALYANI , KNU, WBSU,BU, CU... CHAPTER-KINETIC THEORY OF GASES 3rd Semester (Hons./Ge/Prog.) 1. State the assumptions of kinetic theory of gases. Deduce an expression for the pressure of a gas from the stand point of kinetic theory. 2. What are the assumptions made in the kinetic theory of gases? Are all of them justified? Give some experimental in favour of the kinetic theory. 3. Explain what is meant by root mean square velocity of molecules of a gas. Deduce the relation between the root mean square velocity, pressure and density of a gas. 4. Show that the pressure exerted by a perfect gas us two-thirds of the kinetic energy of the gas molecules in a unit volume. 5. Explain how Boyle’s law, Charles ‘law, Avogadro’s’ hypothesis and graham’s law if diffusion follow from the kinetic theory of gas. 6. State the law of equipartition   of energy .Show how you can use the law to calculate the specific heats of gases and hence finds the value o