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The wave impedance of free space is...

The wave impedance of free space is

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Using B=(mu_0) H find the ration (E_0/H_0) for a plane electromagnetic wave propagating through vacuum. Show that it has the dimensions of electric resistance. This ratio is a universal constant called the impedance of free space.

The magnetic field amplitude of an electromagnetic wave is 2 xx 10^(-7)T . Its' electirc field amplitude if the wave is traveling in free space is

The percentage of free space in a body centred cubic unit cell is

Total energy of EM waves in free space is given by

Assertion : The velocity of electromagnetic waves depends on electric and magnetic properties of the medium Reason : Velocity of electromagnetic waves in free space is constant.

If wavelength of an electromagnetic waves in free space is 0.075m, find its frequency.

The electric field of an electromagnetic wave in free spaces is given by barE=5 cos(10^5t+kx)j , where t in second and x in meter then

The velocity of electromagnetic waves in free space is 3xx10^(8) m/s. Whal is the frequency (in MHz) of the wavelength of vaJue 150 m?

DISHA-ELECTROMAGNETIC WAVES-PHYSICS
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  2. A plane electromagnetic wave is incident on a material surface. The wa...

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  3. The decreasing order of wavelength of infrared, microwave, ultraviolet...

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  4. Which radiation in sunlight causes heating effect?

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  5. The speed of electromagnetic wave in vacuum depends upon the source of...

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  6. The displacement current is

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  7. Electromagnetic radiation of highest frequency is

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  8. A point source of electromagnetic radiation has an average power outpu...

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  9. Frequency of a wave is 6 xx 10^(15) Hz. The wave is

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  10. The electromagnetic waves do not transport

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  11. Which of the following statement is false for the properties of electr...

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  12. Which of the following electromagnetic waves has minimum frequency ?

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  13. The wave impedance of free space is

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  14. A plane electromagnetic wave in a non-magnetic dielectric medium is gi...

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  15. We consider the radition emitted by the human body which of the follow...

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  16. In a plane electromagnetic wave propagating in space has an electric f...

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  17. Out of the following options which one can be used produce a propagati...

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  18. Which of the following is used to produce radio waves of constant ampl...

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  19. In an electromagnetic wave

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  20. If c is the speed of electromagnetic waves in vacuum, its speed in a m...

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