CSIR Physical Sciences: Questions 118 - 121 of 401

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Question number: 118

» Mathematical Methods of Physics » Matrices

Appeared in Year: 2014

MCQ▾

Question

Consider the matrix M=(02i3i2i06i3i6i0) . The eigenvalues of M are – (June)

Choices

Choice (4) Response

a.

2,3,6

b.

5,2,7

c.

4i,2i,2i

d.

7,0,7

Question number: 119

» Electromagnetic Theory » Polarization

Appeared in Year: 2011

MCQ▾

Question

Consider three polarizers P1,P2andP3 placed along an axis as shown in the figure.

A beam of light passing through polarizers

A Beam of Light Passing Through Polarizers

In figure a beam of unpolarized light of intensity I0 is passing through three polarizers.

The pass axis of P1 and P3 are at right angles to each other while the pass axis of P2 makes an angle θ with that of P1. A beam of unpolarized light of intensity I0 is incident on P1 as shown. The intensity of light emerging from P3 is – (December)

Choices

Choice (4) Response

a.

I04sin22θ

b.

I08sin22θ

c.

0

d.

I02

Question number: 120

» Classical Mechanics » Special Theory of Relativity » Mass-Energy Equivalence

Appeared in Year: 2014

MCQ▾

Question

According to the special theory of relativity, the speed v of a free particle of free particle of mass m and total energy E is – (December)

Choices

Choice (4) Response

a.

v=c1mc2E

b.

v=c1(mc2E)2

c.

v=2Em(1+mc2m)

d.

v=c(1+mc2E)

Question number: 121

» Thermodynamic and Statistical Physics » Planck's Distribution Law

MCQ▾

Question

In low density oxygen gas at low temperature, only the translational and rotational modes of the molecules are excited. The specific heat per molecule of the gas is – (December)

Choices

Choice (4) Response

a.

52kB

b.

kB

c.

12kB

d.

32kB

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