GATE (Graduate Aptitude Test in Engineering) Physics: Questions 323 - 327 of 659

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Question 323

Appeared in Year: 2009

Question

MCQ▾

A conducting loop of surface area is moving with a velocity in a magnetic field , is a positive constant of suitable dimensions. The emf induced, , in the loop is given by,

Choices

Choice (4)Response

a.

b.

c.

d.

Question 324

Appeared in Year: 2009

Question

MCQ▾

The dielectric constant of a material at optical frequency is mainly due to –

Choices

Choice (4)Response

a.

Electronic polarizability

b.

Ionic and dipolar polarizability

c.

Dipolar polarizability

d.

Ionic polarizability

Question 325

Appeared in Year: 2009

Question

MCQ▾

In a cubic crystal, atoms of mass lie on one set of planes and atoms of mass lie on planes interleaved between those of the first set. If is the force constant between nearest neighbor planes, the frequency of lattice vibrations for the optional phonon branch with wavevector is –

Choices

Choice (4)Response

a.

0

b.

c.

d.

Question 326

Residue Theorem and Applications

Appeared in Year: 2009

Question

MCQ▾

The value of the integral , where the contour is the circle is –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 327

Appeared in Year: 2009

Question

MCQ▾

The eigen values of matrix are –

Choices

Choice (4)Response

a.

Complex and distinct

b.

Real and coinciding

c.

Real and distinct

d.

Complex and coinciding

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