A plane electromagnetic wave travels in vacuum along Z-direction. What can you say about the directions of its electric and magnetic field vectors?
A plane electromagnetic wave travels in vacuum along Z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 30 MHz, what is its wavelength?
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Since the electromagnetic waves are transverse in nature, the electric and magnetic field vectors are mutually perpendicular to each other as well as perpendicular to the direction of propagation of wave.
As the wave is travelling along Z-direction,
\(\overset\rightarrow{E}\) and \(\overset\rightarrow{B}\) are in XY plane.
For v = 30 MHz = 30 × 106 Hz
Wavelength, λ = \(\frac{c}{v}=\frac{3\times10^8}{30\times10^6}\) = 10 m
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