Solid State Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 10 - 13 of 68

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Question 10

Appeared in Year: 2012

Question

MCQ▾

A simple cubic crystal with lattice parameter undergoes transition into a tetragonal structure with lattice parameters and , below a certain temperature. The ratio of the interplanar spacing of planes for the cubic and the tetragonal structures is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 11

Solid State Physics

Appeared in Year: 2012

Question

MCQ▾

The ground state of sodium atom is a state. The difference in energy levels arising in the presence of a weak external magnetic field , given in terms of Bohr magneton, , is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 12

Appeared in Year: 2011

Question

MCQ▾

For a three – dimensional crystal having N primitive unit cells with a basis of atoms, the number of optical branches is –

Choices

Choice (4)Response

a.

b.

3

c.

d.

Question 13

Appeared in Year: 2013

Question

MCQ▾

A circular polarized monochromatic plane wave is incident on a dielectric interface at Brewster angle. Which one of the following statement is CORRECT?

Choices

Choice (4)Response

a.

The reflected light is plane polarized in the plane of incidence and the transmitted light is circularly polarized.

b.

The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is plane polarized in the plane of incidence.

c.

There will be no reflection light and the transmitted light is circularly polarized.

d.

The reflected light is plane polarized perpendicular to the plane of incidence and the transmitted light is elliptically polarized.

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