If a source is transmitting electro-magnetic waves of frequency 8×106Hz, then the wavelength (in m) of the electro-magnetic waves transmitted from the source will be:
A
20.90 m
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B
23.50 m
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C
12.50 m
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D
37.50 m
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Solution
The correct option is D 37.50 m Given: frequency of waves =8×106Hz=8×106s−1 We know, λ=cv where, λ = wavelength of the radiation c = speed of light v = frequency of the wave So, λ=3×1088×106
On solving, λ=0.375×102m=37.5m Therefore, wavelength of the EM wave will be 37.5 m