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A plane electromagnetic wave of frequenc...

A plane electromagnetic wave of frequency `40 MHz` travels in free space in the `X`-direction. At some point and at some instant, the electric field `vecE` has its maximum value of `750 N//C` in `Y`- direction. The wavelength of the wave is-

A

3.5 m

B

5.5 m

C

7.5 m

D

9.5 m

Text Solution

Verified by Experts

The correct Answer is:
C
`lambda = (C )/(f) = (3 xx 10^(8))/(4 xx 10^(7)) = `7.5m
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