Thermodynamic and Statistical Physics (CSIR Physical Sciences): Questions 7 - 10 of 56

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Question number: 7

» Thermodynamic and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2014

MCQ▾

Question

An ideal Bose gas is confined inside a container that is connected to a particle reservoir. Each particle can occupy a discrete set of single – particle quantum states. If the probability that a particular quantum state is unoccupied is 0.1, then the average number of bosons in that state is – (December)

Choices

Choice (4) Response

a.

10

b.

11

c.

8

d.

9

Question number: 8

» Thermodynamic and Statistical Physics » Phase Space

Appeared in Year: 2014

MCQ▾

Question

The Hamiltonian of a classical particle moving in one dimension is H=p22m+αq4 ; where α is a positive constant and p and q are its momentum and position respectively. Given that it’s total energy EE0 the available volume of phase space depends on E0 as – (December)

Choices

Choice (4) Response

a.

E0

b.

Is independent of E0

c.

E034

d.

E0

Question number: 9

» Thermodynamic and Statistical Physics » Micro- and Macro-States

Appeared in Year: 2012

MCQ▾

Question

Consider a system of non – interacting particle in d dimensions obeying the dispersion relation ε=AkS, where ε is the energy, k is wavevector, s is an integer and A a constant. The density of states, N(ε), is proportional to – (June)

Choices

Choice (4) Response

a.

εds1

b.

εds+1

c.

εsd+1

d.

εsd1

Question number: 10

» Thermodynamic and Statistical Physics » Laws of Thermodynamics

Appeared in Year: 2012

MCQ▾

Question

Let ΔW be the work done in a quasistatic reversible thermodynamic process. Which of the following statement about ΔW is correct? (December)

Choices

Choice (4) Response

a.

ΔW is a perfect differential if the process is adiabatic

b.

ΔW is always a perfect differential

c.

ΔW cannot be a perfect differential

d.

ΔW is a perfect differential if the process is isothermal

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