BSc Sem III ATKT 2014-15 Physics L Add Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Attempt the
   • A. Explain damped Ped oscillation in brief and derive the equation for displacement (8) 20
   • a) The of motion of a forced oscillator is 10 = 12X 107%sin4t. Find the quality factor (4)
   • b) What is compound pendulum? 4
   • B. Define logarithmic decrement and obtain an expression for it. 7
   • B. What do you mean by under damping, critical damping and over damping? ‘A periodic external force acts on 6 kg mass suspended from massless spring of spring of spring constant 150 N/m is 50 N. The damping force is 18 N when the velocity is 1 m/s write equation of motion for forced vibration. (5) 7
   • C. Explain the parts and working of keter’s pendulum 5
2. Q11 Attempt the following 20 marks
   • A. Explain average deviation and standard deviation. Find the best value and determine the average deviation of the followings values 500.45, 501.56, 500.99, 500.89, 501.112, (8)
   • A. Explain the significant digits and state the general rules to determine significant digits State the number of significant figure: 1)0-001232 ii) 6.043 (8)
   • B. Describe normal distribution curve .Show that = 7
   • B. Explain various kind of errors in measurements, how one can detect and eliminate these errors. 7
   • C. If the numbers 22.6 and 44.4 are correct upto their last digit finds the value of the product. If one number were exact what would be the product. (5)
   • C. Find the value of 1) Q Attempt the following: 20 marks
   • A. Determine the depression when beam is supported at the ends and loaded in the middle. Discuss the experimental determination of young’s modulus by using this arrangement. (8)
   • A. What is mean by L-frame and C-frame? How can we relate recoil angle in L-frame with scattering angle in C-frame. (8)
   • B. Explain the bending moment? Derive expression for it. 7
   • B. By ignoring the mass of cantilever derive an expression for the depression produced at the free end when it loaded. Explain what is mean by the cantilever? (7)

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