Question

A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the direction of electric and magnetic field vectors? (Delhi 2011​

Answer 1

Answer:

The electromagnetic wave travels in a vacuum along the z-direction. ... The electric field (E) and the magnetic field (H) are in the x-y plane. They are mutually perpendicular

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Answer 2

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The electromagnetic wave travels in a vacuum along the z-direction. ... The electric field (E) and the magnetic field (H) are in the x-yplane. They are mutually perpendicular.

ᴇxᴀᴍᴘʟᴇ :-

If the frequency of the wave is 30 MHz, what is its wavelength?

${\huge\underline{\mathfrak\green{ solution :-}}}$

The electromagnetic wave travels in a vacuum along the z-direction. The electric field (E) and the magnetic field (H) are in the x-yplane. They are mutually perpendicular.

Frequency of the wave, ν = 30 MHz = 30 × 106 s−1

Speed of light in a vacuum, c = 3 × 108 m/s

Wavelength of a wave is given as:

y = c/v

= 3x10^8/30x10^6

$\boxed{\huge{\mathscr\pink{ans:- \:10m }}}$

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