Q.1 ) Derive an expression for phase and group velocity. Q.2) What do you mean by particle in one dimensional box. Q.3) Explain De-Broglie Wave. Q.4) Derive an expression for simple harmonic oscillator (one dimensional and three dimensional). Q.5) Derive an expression for schrodinger equation for time independent and time dependent. Q.6) Explain BCS theory. Q.7) Explain 1) Meissner effect 2) Type-1 and Type-2 3)What do you mean by high superconductors. 1)Explain application of superconductivity. 2)What do you mean by High tempe