Question

Calculate the frequency and wave number of a radiation,whose wave length is 4800A

Answer 1

Answer:

λ=480nm=480×10−9m       [∵1nm=10−9m]

c=3×108m/sec

Frequency, v=λc=480×10−9m3×108ms−1=6.25×1014s−1 =6.25×1014Hz.

Answer 2

6.25x10^14 is the last answer.