Calculate the mass of a photon with wavelength `3.6Å`.

Explanation

Here, `lamda = 3.6 Å = 3.6 xx 10^(-10)m`
As photon travels with the velocity of light, `v = 3.0 xx 10^(8) ms^(-1)`
By de Broglie equation, `lamda = (h)/(mv) or m = (h)/(lamda v) = (6.626 xx 10^(-34)Js)/((3.6 xx 10^(-10)m) (3.0 xx 10^(8) ms^(-1))) = 6.135 xx 10^(-29) kg`