Show that the wavelength of electromagnetic radiation

cbse
dual-nature

#1

Show that the wavelength of electromagnetic radiation is equal to the de-Broglie wavelength of its quantum (photon).


#2

The momentum of an electromagnetic wave of frequency V, wavelength λ is given by
p = hv /c = h / λ
or
λ = h/p
de broglie wavelength of proton, λ = h/p
h/p = h/ (hv/c) = c/v
Thus, wavelength of electromagnetic radiation is equal to the de-Broglie wavelength.