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

Download LNMU b.sc physics part 1 2020 questions for free

PHYSICS  PART -1   2020

FUL MARKS : 75                       PAPER – 1   

PASS MARKS : 34

LNMU B.SC QUESTIONS DOWNLOAD | B.SC PHYSICS Part 1 2020

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

1. Answer any three of the following (5 marks each).

a)    Discuss Curl of a vector field and give its physical significance.

b)   Define different elastic constants and establish relation between them.

c)     Explain the term viscosity and coefficient of viscosity. Give the dimension of coefficient of viscosity.

d)   Discuss the concept of length contraction from special theory of relativity.

e)    Discuss, in brief, the relativistic Doppler effect.                               

  

GROUP – A  (15 marks each)

2. State and prove Gauss divergence theorem.

3. Calculate the torque on a solid cylinder and describe a method for measuring torsional rigidity.

4. Define coefficient of viscosity. Describe the Rankine’s method for measuring the coefficient of viscosity of gas.

5. State and explain the principle of virtual work and apply it to find the excess pressure over the curved liquid membrane.

  

 GROUP – B

6. What are group velocity and phase velocity ? Obtain and expression for the group velocity in a dispersive medium.

7. Derive an expression for the variation of mass of a particle moving with velocity. Discuss how the result has been verified experimentally.

8. State and explain Fourier’s theorem and apply it to analyse a square wave.

9. State the basic postulates of special theory of relativity and derive Lorentz transformations equations.

             

BEST OF LUCK

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