CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 154 - 156 of 401

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Question number: 154

» Thermodynamic and Statistical Physics » Classical and Quantum Statistics

Appeared in Year: 2014

MCQ▾

Question

Let Equation ; where Equation and Equation are independent and identically distributed Gaussian random variables of mean Equation and standard deviation Equation . Then Equation is – (June)

Choices

Choice (4) Response

a.

1

b.

Equation

c.

Equation

d.

Equation

Question number: 155

» Thermodynamic and Statistical Physics » Introduction to Nonequilibrium Processes

Appeared in Year: 2014

MCQ▾

Question

When a gas expands adiabatically from volume Equation and Equation by a quasi – static reversible process, it cools from temperature Equation to Equation . If now the same process is carried out adiabatically and irreversibly, and Equation is the temperature of the gas when it has equilibrated, then – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 156

» Electromagnetic Theory » Electromagnetic Waves in Free Space

Appeared in Year: 2011

MCQ▾

Question

A plane electromagnetic wave is propagating in a lossless dielectric. The electric field is given by Equation , where c is the speed of light in vacuum, Equation , A and Equation are constant and Equation and Equation are unit vectors along the x and z – axes. The relative dielectric constant of the medium, Equation and the constant A are – (June)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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