GATE Physics: Questions 199 - 201 of 290

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Question number: 199

» Mathematical Physics » Vector Calculus

Appeared in Year: 2013

MCQ▾

Question

A monochromatic plane wave at oblique incidence undergoes reflection at a dielectric interface. If k^i,k^r and n^ are the unit vectors in the directions of incident wave, reflected wave and the normal to the surface respectively, which one of the following expressions is correct?

Choices

Choice (4) Response

a.

(k^i×n^)k^r=0

b.

(k^ik^r)n^0

c.

(k^i×n^)k^r0

d.

(k^ik^r)×n^0

Passage

There are four energy levels E,2E,3Eand4E (where E>0 ). The canonical partition function of two particles is, if these particles are:

Question number: 200 (1 of 2 Based on Passage) Show Passage

» Thermodynamics and Statistical Physics » Partition Function

Appeared in Year: 2013

MCQ▾

Question

Two distinguishable particles –

Choices

Choice (4) Response

a.

e2βEe4βE+e6βEE8βE

b.

e2βE+e4βE+e6βE+e8βE

c.

e3βE+e4βE+2e5βE+e6βE+e7βE

d.

(eβE+e2βE+e3βE+e4βE)2

Question number: 201 (2 of 2 Based on Passage) Show Passage

» Thermodynamics and Statistical Physics » Probability Ensembles

Appeared in Year: 2013

MCQ▾

Question

Two identical fermions –

Choices

Choice (4) Response

a.

e2βEe4βE+e6βEe8βE

b.

e2βE+e4βE+e6βE+e8βE

c.

e3βE+e4βE+2e5βE+e6βE+e7βE

d.

(eβE+e2βE+e3βE+e4βE)2

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