GATE Physics: Questions 27 - 30 of 622

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Question number: 27

» Thermodynamics and Statistical Physics » Degenerate Fermi Gas

Appeared in Year: 2015

MCQ▾

Question

The entropy of a gas containing N particles enclosed in a volume V is given by,

Equation

Where, E is the total energy, Equation is a constant and Equation is the Boltzmann constant. The chemical potential Equation of the system at a temperature T is given by,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 28

» Mathematical Physics » Elements of Complex Analysis » Residue Theorem and Applications

Appeared in Year: 2014

MCQ▾

Question

The unit vector perpendicular to the surface Equation at the point Equation is –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 29

» 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 Equation . The bulk module B is proportional to –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 30

» Electromagnetic Theory » Interference

Appeared in Year: 2016

Short Answer Question▾

Write in Short

In a Young’s double slit experiment using light, the apparatus has two slits of unequal widths. When only slit – 1 is open, the maximum observed intensity on the screen is Equation . When only slit – 2 is open, the maximum observed intensity is Equation . When both the slits are open, an interference pattern appears on the screen. The ratio of the intensity of the principal maximum to that of the nearest minimum is Equation .

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