Physics  XII

  1. Give Kelvin and clauses statement for the second law of the thermodynamics?

  2. Describe cornet's cycle ? derive an expression for the  efficiency of an cornet's engine's?

  3. A heat engine's perform work at the of 500 K.W. efficiency of the engine's is 30% calculate the loss of heat per hour

  4.  What are the basic assumption of the  Kinetic Theory of gases

  5. Show that the pressure of an ideal gas is P=1/3 PV2 , where P is the density of the gas. Verify Charles's law and Boyle's law on the basis of Kinetic Theory of gases

  6. What is Thermodynamics ? State the two laws of Thermodynamics?

  7. Explain what you mean by isothermal. Isobaric and Adiabatic Process.

  8. 540 calories of heat is required to vaporize 1 gm of water at 100 oC. Determine the entropy change involved in vaporizing 5 gm of water (one calory = 4.2 J) 

Section B

  1. State and prove Gauss's Law?

  2. Explain Electric Flux passing through a closed surface?

  3. Apply the law to determine the Electric intensity at a point close to a uniformly distributed positive Electric charge on a large plain surface?

  4. Explain the principle, construction and working of an A.C.Generator, also draw a neat schematic diagram

  5. Explain the terms Coefficient of Linear Expansion and Coefficient of Cubical Expansion?

  6. Establish a mathematical relation b/w the above two terms

  7. State and Explain Ampere's Circuital Law?

  8. Derive an expression for the magnetic field of induction 'B' due to the current passing through a Solenoid.

  9. Numerical also came in this section 

Section C

  1. Give the basic postulates of Bohr's Atomic Theory?

  2. Derive an expression for radii and energy of various orbits of H- atoms

  3. How will you convert benzene into m.nitrobenzonic acid?

  4. Write Short notes on

 

------------GOOD LUCK------------