Question

Calculate the frequency and the wave number of radiation with wavelength of 720nm

Answer 1

Answer:

λ=480nm=480×10  −9  m       [∵1nm=10  −9  m]

c=3×10  8  m/sec

Frequency, v= λ  /c =  480×10  −9 m 3×10  8  ms  −1  =6.25×10  14  s  −1  =6.25×10  14  Hz.