Question

calculate yhe frequency in hertz and wave number of radiation with wavelength 500nm​

Answer 1

ANSWER

Given :

λ=500nm=500×10−9m       [∵1nm=10−9m]

c=3×108m/sec

Frequency, v=λc=500×10−9m3×108ms−1=6.25×1014s−1 =6.25×1014Hz.

Answer 2

speed of light=v=3××1o8m/s

wavelength=x x 500nm

frequency=v x v x

=3×108500×10-93×108500×10-9

=6××1014Hz