Question

The momentum of photon of electromagnetic radiation is `3.3xx10^(-29)kgms^-1`. What is the frequency and wavelength of the waves associated with it ? `h=6.6xx10^(-34)Js`.

Answer 1

Here, `p=3.3xx10^(-29) kg ms^-1, v=? , lambda=?`
Energy of a photon `=hv=mc^2=(mv)xxc=pc`
or `v=(pc)/h=(3.3xx10^(-29)xx3xx10^8)/(6.6xx10^(-34))=1.5xx10^(13)Hz`
`lambda=c/v=(3xx10^8)/(1.5xx10^(13))=2xx10^-5m`