1.

The frequency of an electromagnetic wave is10 MHz. What is its wavelength ?(A) 10 m(B) 3 m(C) 300 m(D) 30 m

Answer»

λ= v/f

where

λ

is the wavelength

f

is the frequency and

v

is the speed

v = 299792458 m/s

because it is electromagnetic wave

f = 10^7 Hz

hence wavelength =30m



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