LNMU B.SC physics part 1 questions free download ~ LNMU Notes

Download LNMU b.sc physics part 1 2019 questions for free

PHYSICS  PART -1   (2019)     

      

Paper - 2     Pass marks : 34

Answer any five questions, selecting two from each group, in which Q.no. 1 is compulsory.

1. Give an account of  any three of the following.

 (5 marks each).

a)     Distinguish between a perfect gas and a real gas.

b)   Express Gauss’s law in differential form. How Coulomb’s law is obtained from this law ?

c)     State the second law of thermodynamics. Give the physical significance of this law.

d)   Define polarization vector.

e)    Distinguish between self and mutual inductance.

f)      Distinguish between relative permeability and magnetic susceptibility.

                       GROUP – A   (15 MARKS EACH )

2.    Deduce van der waal’s equations of state. What are the     critical constants ?

3.    What do you mean by transport phenomena ? On the basis of Kinetic theory of gases derive an expression for the viscosity of a gas.

4.  Explain the working of Carnot’s engine an obtain expression for its efficiency.

5.   Give a brief account of Thermodynamical functions and deduce Maxwell’s thermodynamic relations.

                               GROUP – B

6. Explain the term “electric dipole, and dipole-moment”. Obtain expression for potential and field to an electric dipole.

7. What is a magnetic circuit ? Establish its analogy with an electric circuit. Use this concept to obtain the magnetic flux in the air gap of an electromagnet.

8. Define Electric Flux. State and prove Gauss’s theorem in electrostatics. Explain any one of its applications.

9. What is Electric Image ? Apply it to obtain expression for electric field dur to a point charge near an earthed spherical conductor.

                                    BEST OF LUCK

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