1) What is meant by reverberation time? Deduce the Sabine’s formula for reverberation time.
2)(a) Deduce the expression for depression at free end of the cantilever due to load. (Suppose the weight of cantilever is negligible)
(b) Cantilever of length 50cm fixed at one end is depressed by 20mm at loaded end. Compute the depression at the distance of 40cm from fixed end.
3)(a) Derive an expression for depression for rectangular beam loaded in such a way that bending is uniform.
(b) Describe experimental setup used to find out Young’s modulus of the rectangular beam loaded on its either side.
4)(a) Explain in detail Davisson and Germer experiment for determination of wavelength of electrons.
(b) What is the physical importance of wave function?
5)(a) Derive the expression for energy of the electron in the infinitely deep potential well having one dimension.
(b) Calculate the energy difference between first and second quantum state for the free electron in solid of 1m cube.