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The cross product of electric and magnetic field gives

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Important Questions on Electromagnetic Waves

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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 9
Choose the incorrect statement among the following for EM waves
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 6
If the electric field and magnetic field of an electromagnetic wave are related as B=Ec, where the symbols have their usual meanings and the energy in a given volume of space due to the electric field part is U, then the energy due to the magnetic field part will be
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 7
Which of the following physical quantities contained in a small volume oscillates at double the frequency of passing electromagnetic waves?
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 8
A plane electromagnetic wave of frequency 28MHz travels in free space along the positive x-direction. At a particular point in space and time, electric field is 9.3 V m-1 along positive y-direction. The magnetic field (in T) at that point is
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 9
A plane electromagnetic wave is incident on a plane surface of area A normally, and is perfectly reflected. If energy E strikes the surface in time t then average pressure exerted on the surface is (c= speed of light)
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 26
For a medium with permittivity ε and permeability μ the velocity of light is given by
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 27
Which one of the following electromagnetic radiations has the smallest wavelength?
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Gamma Question Bank for Medical Physics>Chapter 23 - Electromagnetic Waves>Assignment>Q 28
If ε0 and μo are the electric permittivity and magnetic permeability and the free space and ε and μ are the corresponding quantities in a medium, then the index of refraction of the medium is