Thermodynamic and Statistical Physics (CSIR Physical Sciences): Questions 1 - 3 of 56

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Question number: 1

» Thermodynamic and Statistical Physics » Thermodynamic Potentials

Appeared in Year: 2013

MCQ▾

Question

A vessel has two compartments of volume V1 and V2, containing an ideal gas at pressure P1 and P2, and temperatures T1 and T2 respectively. If the wall separating the compartments is removed, the resultant equilibrium temperature will be – (June)

Choices

Choice (4) Response
a.

P1T1+P2T2P1+P2

b.

V1T1+V2T2V1+V2

c.

(T1T2)12

d.

P1V1+P2V2P1V1T1+P2V2T2

Question number: 2

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2013

MCQ▾

Question

Ten grams of ice at 00 C is added to a beaker containing 30 grams of water at 250 C. What is the final temperature of the system when it comes to thermal equilibrium?

(The specific heat of water is 1calgm11 and latent heat of melting of ice is 80calgm1 ) (June)

Choices

Choice (4) Response
a.

1.25

b.

7.5

c.

0

d.

12.5

Question number: 3

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2013

MCQ▾

Question

For temperature T1 > T2, the qualitative temperature dependence of the probability distribution F(v) of the speed v of molecule in three dimensions is correctly represented by the following figure: (June)

Choices

Choice (4) Response
a.
Probability distribution of speed vs speed: Choice A

Probability Distribution of Speed vs Speed: Choice A

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

b.
Probability distribution of speed vs speed: Choice B

Probability Distribution of Speed vs Speed: Choice B

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

c.
Probability distribution of speed vs speed: Choice C

Probability Distribution of Speed vs Speed: Choice C

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

d.
Probability distribution of speed vs speed: Choice D

Probability Distribution of Speed vs Speed: Choice D

In figure the qualitative temperature dependence of the probability distribution of speed of molecule in three dimensions is represented.

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