Solid State Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 1 - 4 of 68

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Question 1

Appeared in Year: 2016

Question

MCQ▾

Consider a metal which obeys the Sommerfeld model exactly. If is the Fermi energy of the metal at and is its Hall coefficient, which of the following statement is correct?

Choices

Choice (4)Response

a.

is independent of

b.

c.

d.

Question 2

Solid State Physics

Appeared in Year: 2015

Write in Short

Short Answer▾

The lattice parameters of an orthorhombic crystal are related by . In units of , the inter-planar separation between the planes is ________ (up to three decimal places)

Question 3

Appeared in Year: 2015

Write in Short

Short Answer▾

The dispersion relation for phonons in a one dimensional monatomic Bravais lattice with lattice spacing and consisting of ions of masses M is given by,

Where is the frequency of oscillation, is the wavevector and C is the spring constant. For the long wavelength modes , the ratio of the phase velocity to the group velocity is ________.

Question 4

Solid State Physics
Type-I and Type-II Superconductors

Appeared in Year: 2015

Question

MCQ▾

Which one of the following represents the electron occupancy for a superconductor in its normal and superconducting states?

Choices

Choice (4)Response

a.

The Electron Occupancy: Choice A

b.

The Electron Occupancy: Choice B

c.

The Electron Occupancy: Choice C

d.

The Electron Occupancy: Choice D

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