BSc Physics SEM I ATKT PHYSICS PAPER I Question Paper - Mumbai University | munotes

Questions asked in this paper

• (2) Figures to the right indicate full marks

1. Q2 A) Attempt ANY ONE 8 marks
   • (i) Show that for steady flow of incompressible fluid P + pgh + pv* = constant. where, symbols have their usual meanings Show that torque required to twist the cylinder is If the and ‘r’ the radius of cylinder
   • B) Attempt ANY ONE 8
   • (i) Write the applications of Bernoulli’s theorem
   • (ii) | For a homogeneous isotropic material derive the relation between Young’s modulus, modulus of rigidity and Poisson’s ratio o
   • C) Attempt ANY ONE 4 A10kg block rests on a smooth frictionless table. A string attached to the block passes over a frictionless pulley kg mass hangs from the string. Find the acceleration and tension produced in the string
   • (ii) silver Young’s modulus is N/m? and bulk modulus(K) is N/m? Find the Poisson’s ratio of Silver
2. Q3 A) Attempt ANY ONE 8 marks
   • (i) Derive the expression for optical path difference between two rays in the case of interference due to transmitted light in thin film
   • (ii) Derive the expression for the fringe width of interference pattern in the case of a wedge shaped film
   • B) Attempt ANY ONE 8
   • (i) . Derive an expression for equivalent focal power for a system having two thin lenses separated by a finite distance
   • (ii). Describe and explain the working of Huygens eyepiece
   • C) Attempt ANY ONE 4
   • (i) In Newton’s rings experiment, diameter of the 15th ring is 6.9mm and that of the ring is 4.36mm. If the radius of the curvature of lens is 1.1m, calculate wavelength of the light used
   • (ii) Two thin convex lenses having focal length 15cm and 12cm are coaxial and separated by a distance of 10cm.Find the equivalent focal length and positions of principal points Attempt ANY ONE 8
   • (i) With the corrections to pressure and volume, arrive at Van der
   • (ii). Show for Reversible adiabatic process where @ is the isobaric volume coefficient of expansion
   • B) Attempt ANY ONE 8
   • (i) Show that for isothermal process work done, W is A perfect gas at room temperature having volume of 3m? and initial pressure of 2 atm undergoes isothermal expansion to a volume of 5 m? Calculate the work done by the gas
   • C) Attempt ANY ONE 4
   • (i) p, Volume V and temperature Tof a certain material are Find the expression for the work done by the material if the temperature changes from T; to while the pressure remains constant. What is work done if volume is to be kept constant?
   • (ii) that for adiabatic process work done, W is
3. Q5 Attempt ANY FOUR 20 marks
   • (i) Write short note on limiting value of Poisson’s ratio
   • (ii) Show that velocity of fluid flowing through a pipe is inversely proportional to area of cross sections of a pipe
   • (iii) | Derive an expression for achromatic combination of two thin lenses in contact
   • (v) are the limitations of Van der Waals equations? If Pc = 32.7 atm and R = 82.07 cm? atoms K",

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