# Thermodynamics and Statistical Physics-Classical and Aquantum Statistics (GATE (Graduate Aptitude Test in Engineering) Physics): Questions 1 - 4 of 10

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## Question number: 1

» Thermodynamics and Statistical Physics » Classical and Aquantum Statistics

Appeared in Year: 2014

MCQ▾

### Question

For a gas under isothermal conditions, its pressure P varies with volume V and . The bulk module B is proportional to –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Thermodynamics and Statistical Physics » Classical and Aquantum Statistics

Appeared in Year: 2012

MCQ▾

### Question

At a certain temperature T, the average speed of nitrogen molecules in air is found to be . The most probable and the root mean square speeds of the molecules are, respectively –

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 3

» Thermodynamics and Statistical Physics » Classical and Aquantum Statistics

Appeared in Year: 2012

MCQ▾

### Question

Which one of the following cannot be explained by considering a harmonic approximation for the lattice vibrations in solids?

### Choices

Choice (4) Response

a.

Thermal expansion

b.

Optical branches in lattices

c.

Debye’s law

d.

Dulong – Petit law

## Question number: 4

» Thermodynamics and Statistical Physics » Classical and Aquantum Statistics

Appeared in Year: 2012

MCQ▾

### Question

A classical gas of molecules, each of mass , is in thermal equilibrium at the absolute temperature, . The velocity component of the molecules along the Cartesian axes are and . The mean value of is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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