BSc Physics SEM I ATKT 2015-16 ATKT PHYSICS I Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Answer the following: 20 marks
   • A) Derive equation, What principle is it based? Is the equation applicable for a
   • A) For homogenous isotropic medium material show that Y=3K (1-20). (8M)
   • B) State and explain Newton's and Jaws of motion with (7M)
   • B) Derive Poisseulle’s law for a liquid flowing in a narrow tube state the assumption made
   • C) Define ratio. Show that the limiting value of ratio is | and 0.5
   • C) Define: Angle of friction, Coefficient of friction and Law of friction. (SM)
2. Q2 Answer the following: 20 marks
   • A) Derive the expression by a perfect gas in an isothermal expression and in the adiabatic
   • A) Explain the application for the first law of thermodynamic in real gas. Thus derive the ion by using )
   • B) What is phase transition? Explain free expansion of Gas-Joule’s law. (7M)
   • B) What is meant by phase transition? Show that the change in internal energy ofa substance & when it undergoes a phase change is given by AU= mL - p (7M)
   • C) A perfect gas having volume of and initial pressure of | atm undergoes isothermal expression to volume of 4m’. Calculate the work done by the gas (SM)
   • C) One mole of perfect gas at undergoes isothermal expansion till its volume is doubled Calculate the work done by the gas and the heat absorbed by it. (5M) Answer the following: (20 marks)
   • A) What is magnetostriction effect? Explain magnetostriction oscillator with neat and
   • A) Explain the factors affecting the acoustic quality of building. (8M)
3. Q8 Describe briefly the application of ultrasonic. (7M) What is meant by reverberation and reverberation time? Explain the causes to form reverberation in hall. How it can be minimized, C} State the Properties of ultrasonic waves. (SM) An auditorium of volume is found to have a reverberation time of The absorbing surface of the hall has an area of 600m’. Calculate the average absorption
4. Q4 Answer the following (Any 3): State the feature that the acoustically good auditorium should have 15 marks
   • B) Explain principle and working of piezoelectric oscillator circuit
   • C) State and explain hooks law
   • D) A metal wire of length | and radius r is stretched. Assuming that the volume of wire is interchanged. Show that poisson’s ratio of the material is
   • E) The equation of state of gas is PV=RT[ B is function of T alone. Show that
   • F) State the term work done in thermodynamic one mole of perfect gas occupying 6 litres at 1 atm pressure is adiabatically compressed to 2 liter Calculate the work done on

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