Thermodynamics and Statistical Physics-Bose-Einstein Condensation (GATE Physics): Questions 1 - 4 of 4

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Question number: 1

» Thermodynamics and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2014

MCQ▾

Question

For a system of two bosons, each of which can occupy any of the two energy levels 0 and ε , the mean energy of the system at a temperature T with β=1kBT is given by,

Choices

Choice (4) Response

a.

2εeβε+εeβε2+eβε+e2βε

b.

1+εeβε2eβε+e2βε

c.

εeβε+2εeε1+2eβε+e2βε

d.

εeβε+2εe2βε2+eβε+e2βε

Question number: 2

» Thermodynamics and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2015

MCQ▾

Question

In Bose – Einstein condensates, the particles –

Choices

Choice (4) Response

a.

Have overlapping wave functions

b.

Condense in real space

c.

Have large and positive chemical potential

d.

Have strong inter – particle attraction

Question number: 3

» Thermodynamics and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2010

MCQ▾

Question

Which of the following atoms cannot exhibit Bose – Einstein condensation, even in principle?

Choices

Choice (4) Response

a.

1H1

b.

4He2

c.

23Na11

d.

40K19

Question number: 4

» Thermodynamics and Statistical Physics » Bose-Einstein Condensation

Appeared in Year: 2008

MCQ▾

Question

A photon gas is at thermal equilibrium at temperature T . The mean number of photons in an energy state ε=ω is –

Choices

Choice (4) Response

a.

(exp(ωkBT)1)1

b.

exp(ωkBT)+1

c.

exp(ωkBT)1

d.

(exp(ωkBT)+1)1

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