CSIR (Council of Scientific & Industrial Research) Physical Sciences: Questions 240 - 242 of 463

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Question number: 240

» Electromagnetic Theory » Radiation- From Moving Charges

Appeared in Year: 2013

MCQ▾

Question

An oscillating current Equation flows in the direction of the y – axis through a thin metal sheet of area Equation kept in the Equation plane. The rate of total energy radiated per unit area from the surfaces of the metal sheet at a distance of 100 m is – (June – 2013)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 241

» Quantum Mechanics » Timeindependent Perturbation Theory and Applications

Appeared in Year: 2013

MCQ▾

Question

A perturbation Equation is added to the Hydrogen atom potential. The shift in the energy level of 2P state, when the effects of spin are neglected up to second order in Equation , is – (Dec. 2013)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

0

Question number: 242

» Thermodynamic and Statistical Physics » Diffusion Equation

Appeared in Year: 2013

MCQ▾

Question

Consider the following ratio of the partial decay widest,

Equation

Equation

If the effects pf electromagnetic and weak interaction are neglected, then Equation and Equation are respectively is given as, (Dec -2013)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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