Thermodynamics and Statistical Physics-Classical and Aquantum Statistics (GATE 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 PV53 . The bulk module B is proportional to –

Choices

Choice (4) Response

a.

V53

b.

V23

c.

V12

d.

V35

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 400ms . The most probable and the root mean square speeds of the molecules are, respectively –

Choices

Choice (4) Response

a.

422ms,600ms

b.

820ms,917ms

c.

355ms,434ms

d.

152ms,301ms

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 T3 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 m , is in thermal equilibrium at the absolute temperature, T . The velocity component of the molecules along the Cartesian axes are vx,vy and vz . The mean value of (vx+vy)2 is –

Choices

Choice (4) Response

a.

32kBTm

b.

12kBTm

c.

kBTm

d.

2kBTm

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