CSIR Physical Sciences: Questions 321 - 323 of 389
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Question number: 321
Appeared in Year: 2012
The free energy difference between the superconducting and the normal states of a material is given by, where is an order parameter and and are constants such that in the normal and in the superconducting state, while always. The minimum value of is – (December)
Question number: 322
Appeared in Year: 2011
A constant perturbation as shown in the figure below acts on a particle of mass confined in an infinite potential well between 0 and L.
The first – order correction to the ground state energy of the particle is –
Light of wavelength 660 nm and power of is incident on a semiconductor photodiode with an absorbing layer of thickness of .