Solid State Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 61 - 64 of 68

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Question 61

Solid State Physics
Type-I and Type-II Superconductors

Appeared in Year: 2006

Question

MCQ▾

Which one of the following statements about superconductor is not true?

Choices

Choice (4)Response

a.

A type superconductor exhibits Meissner effect up to the second critical magnetic field

b.

Type and type superconductor exhibit sharp fall in resistance at the superconducting transition temperature

c.

A type superconductor exhibits zero resistance up to the second critical magnetic field

d.

A type superconductor is completely diamagnetic

Question 62

Appeared in Year: 2006

Question

MCQ▾

Which one of the following axes of rotational symmetry is not permissible in single crystals?

Choices

Choice (4)Response

a.

Four – fold axis

b.

Five – fold axis

c.

Two – fold axis

d.

Three – fold axis

Question 63

Solid State Physics

Appeared in Year: 2006

Question

MCQ▾

If the number density of a free electron gas changes from to , the value of plasma frequency (in ) changes from to –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 64

Solid State Physics

Appeared in Year: 2006

Question

MCQ▾

A classical charged particle moving with frequency in a circuit orbit of radius , centered at the origin in the plane, electromagnetic radiation. At points and , where , the electromagnetic waves are –

Choices

Choice (4)Response

a.

Circularly polarized and elliptically polarized, respectively

b.

Plane polarized and circularly polarized, respectively

c.

Circularly polarized and plane polarized, respectively

d.

Plane polarized and elliptically polarized, respectively

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