Question

calculate frequency and wave number of radiation with wavelength 480 NM

Answer 1

c=f* lamda 

(speed of light constant) 299 792 458 m/s = f * 0.00000048 
f= 299 792 458/ 0.00000048 = 6.246 *10^14 Hz

Thanks to Chemguru

Answer 2

Answer:

Explanation:

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.