Solid State Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 21 - 25 of 68

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Question 21

Appeared in Year: 2013

Question

MCQ▾

Two gases separated by an impermeable but movable partition are allowed to freely exchange energy. At equilibrium, the two sides will have the same –

Choices

Choice (4)Response

a.

Pressure and temperature

b.

Volume and energy

c.

Pressure and volume

d.

Volume and temperature

Passage

The tight binding energy dispersion relation for electrons in a one – dimensional array of atoms having lattice constant and total length is, ; where and are constants and is the wave – vector.

Question 22 (1 of 2 Based on Passage)

Solid State Physics

Appeared in Year: 2011

Question

MCQ▾

The density of states of electrons (including spin degeneracy) in the band is given by –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 23 (2 of 2 Based on Passage)

Solid State Physics

Appeared in Year: 2011

Question

MCQ▾

The effective mass of electrons in the band is given by,

Choices

Choice (4)Response

a.

b.

c.

d.

Question 24

Appeared in Year: 2011

Question

MCQ▾

A metal with body centered cubic structure shows the first (i.e.. , smallest angle) diffraction peak at a Bragg angle of . The wavelength of X – ray used is . The volume of the primitive unit cell of the metal is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 25

Appeared in Year: 2010

Question

MCQ▾

The Hall coefficient, of sodium depends on –

Choices

Choice (4)Response

a.

The effective charge carrier mass and carrier density

b.

The charge carrier density and relaxation time

c.

The charge carrier density only

d.

The effective charge carrier mass

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