BSc Physics SEM I 2017 18 2017-18 ATKT PHYSICS Paper II Question Paper - Mumbai University | munotes

Questions asked in this paper

• Figures to the right indicate full marks,

1. Q1 B) Attempt any one: [7 Marks}
   • a) Wher; arks ) ring Explain with the necessary theory the formation of gs In retlected light. Hence show that the radius of n" dark ring is proportional to Square root of a natural no
   • b) Write a short note on Spherical aberration 4 Q.1) C) Attempt any one. {5 Marks]
   • a) Discuss Construction and working of Huygen’s eyepiece
   • b) Describe the Schuster’s method
2. Q2 A) Attempt any one. 8 marks
   • a) Describe construction and working of He-Ne laser. Draw energy level diagram
   • b) With the help of neat diagram explain how the communication system is based on optical fibre? Write the advantages and Disadvantages of optical fibres in modern
3. Q2 B) Attempt any one
   • a) Give a brief account of laser,
   • b) What numerical aperture (NA) of an optrical fibre? Derive necessary expression for ttempt any one Attemp process with the help of neat label diagram q a) Explain the fo: emission note on graded index OP
   • b) [ 8
   • 3) A) Attempt any every step ‘ve Van der Waals equation interaction for an ideal gas Xplain A ent on Ca ‘bon 1 Dioxide yn of the curve passing through id minima of Van der Waals zeroth law of ain the nomenon of refraction through a thin lens. Derive an expression for the ength of lens. [Lens maker formula) construction and working of Ruby —laser with the help of neat diagram the s ructure of a step-index optical fibre. Explain the propagation of light Vander Waals constants for a gas are given by, a = 8.74 x Nm and Find the critical constants of the gas . R= mol ‘how that for a Simple compressible system , work done by a system is given by

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