Question

what is the frequency of radiation of wave length 600nm

Answer 1

frequency = velocity of light / wave length
wave length = 600 nm = 600×10 power -9 m
velocity of light = 3 × 10 power 8 m/s
therefore,
frequency = 3×10 power 8 / 600×10 power -9
                = 3×10 power 8 ×10 power 9 / 600
                = 3× 10 power 17 / 6 × 10²
                = 3× 10 power 15 / 6
                = 10× 10 power 14 / 2
                = 5× 10 power 14  Hz
therefore frequency = 5× 10 power 14  Hz

Answer 2

Given: Wavelength of light, λ = 600 nm, 
          Velocity of light, c = 3 × 10^8 m/s, 
The frequency is given by f = cλ 
                                       = 3×10^8/600×10^−9 
                                       = 5x 10 ^14 Hz...