Question

Calculate the wavelength of radiation having a frequency of 4×10^11 khz

Answer 1

nu =4×10^11khz
=4×10^14hz
c=nu×lambda
therefore ,lambda =c/nu
=3×10^8÷4×10^14
=3÷4×10^6
=0.75×10^-6
7.5×10^-7 answer

Answer 2

ANSWER:-
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We know that wavelength = velocity/ frequency.
Therefore substituting the values we get,
Wavelength = 3*10^8/4*10^3*10^11
Wavelength = 0.75*10^-6m.