CSIR Physical Sciences: Questions 197 - 200 of 389

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Question number: 197

» Thermodynamic and Statistical Physics » Phase Space

Appeared in Year: 2011

MCQ▾

Question

Consider the transition of liquid water to steam as water boils at a temperature of 1000 C under a pressure of 1 atmosphere. Which one of the following quantities does not change discontinuously at the transition? - (June)

Choices

Choice (4) Response

a.

The internal energy

b.

The entropy

c.

The specific volume

d.

The Gibbs free energy

Question number: 198

» Nuclear and Particle Physics » Semiempirical Mass Formula

Appeared in Year: 2014

MCQ▾

Question

If the binding energy B of a nucleus (mass number A and charge Z) is given by,

B=aVAaSA23asym(2ZA)2AaCZ2A13 ; where aV=16MeV,aS=16MeV,asym=24MeVandaC=0.75MeV , then the Z for the most stable isobar for a nucleus with A=216 is –

(December)

Choices

Choice (4) Response

a.

68

b.

92

c.

84

d.

72

Question number: 199

» Mathematical Methods of Physics » Introductory Group Theory - SU(2) and O(3)

Appeared in Year: 2014

MCQ▾

Question

Let α and β be complex numbers. Which of the following sets of matrices forms a group under matrix multiplication? (December)

Choices

Choice (4) Response

a.

[1αβ1], where αβ1

b.

[αα*ββ*] , where αβ* is real

c.

[αββ*α*], where α 2+ β 2=1

d.

[αβ00]

Question number: 200

» Thermodynamic and Statistical Physics » Maxwell Relations

Appeared in Year: 2011

MCQ▾

Question

A system of N non – interacting spin 12 particles is placed in external magnetic field H. The behaviour of the entropy of the system as a function of energy is given by – (December)

Choices

Choice (4) Response

a.

Entropy as a function of Energy: Choice A

Entropy as a Function of Energy: Choice A

In figure the behaviour of the entropy of the system as function of energy is given.

b.

Entropy as a function of Energy: Choice B

Entropy as a Function of Energy: Choice B

In figure the behaviour of the entropy of the system as function of energy is given.

c.

Entropy as a function of Energy: Choice C

Entropy as a Function of Energy: Choice C

In figure the behaviour of the entropy of the system as function of energy is given.

d.

 Entropy as a function of Energy: Choice D

Entropy as a Function of Energy: Choice D

In figure the behaviour of the entropy of the system as function of energy is given.

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