# Thermodynamics and Statistical Physics [GATE (Graduate Aptitude Test in Engineering) Physics]: Questions 60 - 62 of 82

Access detailed explanations (illustrated with images and videos) to 659 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. Unlimited Access, Unlimited Time, on Unlimited Devices!

View Sample Explanation or View Features.

Rs. 450.00 -OR-

## Question 60

Thermodynamics and Statistical Physics

Appeared in Year: 2008

### Question

MCQ▾

Two identical particles have to be distributed among three energy levels. Let and represent the ratio of probability of finding two particles to that of finding one particle in a given energy state. The subscripts and correspond to whether the particles are bosons, fermions and classical particles, respectively. Then is equal to –

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 61

Thermodynamics and Statistical Physics

Appeared in Year: 2007

### Question

MCQ▾

The free energy for a photon gas is given by , where is a constant. The entropy and the pressure of the photon gas are –

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question 62

Thermodynamics and Statistical Physics

Appeared in Year: 2008

### Question

MCQ▾

The pressure versus temperature diagram of a given system at certain low temperature range is found to be parallel to the temperature axis in the liquid – to – solid transition region. The change in the specific volume remains constant in this region. The conclusion one can get from the above is –

### Choices

Choice (4)Response

a.

The change in entropy is zero in the liquid – to – solid transition region.

b.

The entropy decreases when the system transform from liquid to solid phase in this region of temperature.

c.

The entropy of solid is zero in this temperature region

d.

The entropy increases when the system goes from liquid to solid phase in this temperature region.

Developed by: