Thermodynamics and Statistical Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 77 - 81 of 82

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Question 77

Thermodynamics and Statistical Physics

Appeared in Year: 2006

Question

MCQ▾

A monatomic crystalline solid comprises of atoms, out of which atoms are in interstitial positions. If the available interstitial sites are , then number of possible microstates –

Choices

Choice (4)Response

a.

b.

c.

d.

Question 78

Thermodynamics and Statistical Physics

Appeared in Year: 2006

Question

MCQ▾

In hydrogenic states, the probability of finding an electron at is –

Choices

Choice (4)Response

a.

zero in state

b.

non – zero in state

c.

zero in state

d.

zero in state

Question 79

Thermodynamics and Statistical Physics

Appeared in Year: 2006

Question

MCQ▾

For the given transformations

and

;

where and are canonically conjugate variable, which one of the following statement is true?

Choices

Choice (4)Response

a.

(i) and (ii) are canonical

b.

Only (ii) is canonical

c.

Neither (i) and (ii) is canonical

d.

Only (i) is canonical

Question 80

Thermodynamics and Statistical Physics

Appeared in Year: 2017

Question

MCQ▾

Consider non – interacting, distinguishable particles in a two level system at temperature . The energies of the levels are and , where . In the high temperature limit , what is the population of particle in the level with energy ?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 81

Thermodynamics and Statistical Physics

Appeared in Year: 2017

Question

MCQ▾

A reversible Carnot engine is operated between temperature and with a photon gas as the working substance. The efficiency of the engine is:

Choices

Choice (4)Response

a.

b.

c.

d.

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