BSc Sem IV 2014 2015 2015 Physics Lll Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q3 Attempt the following:
   • a) Explain what is meant by one dimensional infinite rectangular potential well is it also called a one dimensional box with rigid walls?
   • b) What is meant by zero potential? Discuss classically & quantum mechanically the motion of a particle for zero potential. Find the expectation value of momentum af comment on it
   • B) Attempt any
   • a) What is meant by finite square well potential? Set up STIE for a particle in
   • b) What is step potential? Discuss classical behavior of the motion of a particle when
   • C) Attempt any 1:- 5M]
   • a) Write down Schrodinger’s equation for a particle in a infinite square well potential and show that its energy is quantized
   • b) Show that expectation of momentum of a particle in a one box is Comment on the statement
2. Q4 Attempt any 3: - 15M}
   • a) Normalize the following wave function. = sin <1 n is an integer
   • b) What is meant by normalization of wave
   • c) A 2.0 meter long rod is moving along its length with velocity 0.8C. its length as it appears to an observer on the earth. ‘a
   • d) Calculate the percentage contraction of a rod moving with velocity 0.6 times the velocity of light in a direction at to its own length Derive the Schrodinger’s equation for a free particle and find the expectation value of
   • f) having energy 10 MeV approaches a potential barrier of height 50 MeV and width m. determine the transmission coefficient (my = 6.68 x

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