Question

Q.6 Calculate the frequency and wave number of a radiation with wavelength 480nm.

(c = 3X108 m/s)

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Answer 1

Explanation:

Given :- Wavelength (lambda) = 480nm = 480×10^-6 m

C = 3×10^8m/s

We know. frequency "F" = C/L(Lambda)

F = 3×10^8/ 480× 10^-6 = 3×10²/ 480= 100/16 = 25/4 = 6.25HZ

wave no. (K) = F/C

= 6.25/ 3* 10^8 = 2.084× 10^-8

or. k = 2.084× 10^-2 m^-1 Answer

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