Electromagnetic Theory (CSIR Physical Sciences): Questions 24 - 26 of 57

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Question number: 24

» Electromagnetic Theory » Dipoles and Retarded Potentials

Appeared in Year: 2011

MCQ▾

Question

The potential of a diatomic molecule as a function of the distance Equation between the atoms is given by Equation . The value of the potential at equilibrium separation between the atoms is: (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 25

» 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

Question number: 26

» Electromagnetic Theory » Reflection and Refraction

Appeared in Year: 2014

MCQ▾

Question

A plane electromagnetic wave incident normally on the surface of a material is partially reflected. A measurement on the standing wave in the front of the interface shows that the ratio of the electric field amplitude at the maxima and the minima is 5. The ratio of the reflected intensity to the incident intensity is (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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