Question

in infra red region of the spectrum of h a line is obtained have wave no:3802cm inverse.calculate the wavelength and frequency

Answer 1

Answer:

52.279 x 10-28 J

Explanation:

We know that ,

Frequency(v) can be calculated as follows:

  λv = c

  where λ = 3802 x 10-2 m

             c = 3 x 108 m/s

  Frequency, v = (3 x 108 m/s) / 3802 x 10-2m

                        = 7.89 x 106 s-1

Energy = hv

  where h = 6.626 x 10-34 J/s

Hence, energy of the photon

  =  6.626 x 10-34 J/s x 7.89 x 106 s-1

   =   52.279 x 10-28 J