Calculate the wavelength, frequency and wave number of a light wave whose period is 2.0×10-10 s.



Q.7:- Calculate the wavelength, frequency and wave number of a light wave whose period is

Answer:-
Frequency (ν) =  1/Period = 1/2.0×10-10 s = 5×10s-1.
Wavelength (λ) = c/ν = 3.0×10ms-1/5×10s-1 = 6.0×102 m
Wave number (ṽ) = 1/λ = 1/6.0×102 m = 16.66 m-1

2.0×10-10 s.