Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 1

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If in a region there is a time varying electric field then which of the following Maxwell's equation will be most suitable?

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Important Questions on Electromagnetic Waves

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 3

An electromagnetic wave travels in a medium with speed

2 \times 10^{8} m s^{- 1}

. If relative permeability of medium is

1.0

, then relative permittivity is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 7

Which of the following represents an infra-red wavelength?

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 8

If an electromagnetic wave propagating through vacuum is described by

E_{y} = E_{0} \sin (k x - ω t); B_{z} = B_{0} \sin (k x - ω t)

, then

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 9

The figure gives the magnetic field of an electromagnetic wave at a certain point and at a certain instant. The wave transports energy in negative $y -$ direction. Then the direction of electric field at this point and instant is

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 10

The amplitude of electric field at a distance

r

from a point source of power

P

is (taking

100 %

efficiency)

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 11

Displacement current exists in the region between the plates of a parallel plate capacitor if:

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Gamma Question Bank for Engineering Physics>Chapter 22 - Electromagnetic Waves>Assignment Set-2>Q 12

An electric field exists in the cylindrical region shown and is parallel to the cylinder axis. The magnitude of the field might vary with time according to any of the four graphs shown. Rank the four variations according to the magnitudes of the magnetic field induced at the edge of the region, least to greatest.

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