A photon of wavelength `4400 Å` is passing through vaccum. The effective mass and momentum of the photon are respectively

Options

A. `5 xx10^(-36) kg , 1.5 xx10^(-27) kg` - m/s
B. `5 xx10^(-35) kg , 1.5 xx10^(-26) kg` - m/s
C. Zero `1.5 xx10^(-26) kg` - m/s
D. `5 xx10^(-36) kg , 1.67 xx10^(-43) kg` - m/s

Answer

A

Explanation

`P=(h)/lamda=(6.6xx10^(-34))/(4400xx10^(-10))=1.5 xx10^(-27)kgm//sec`
And mass `(m)=P/c= (1.5 xx10^(-27))/(3xx10^8) =5xx10^(-36)kg`