The momentum `("in" kg-m//s)` of photon having 6 MeV energy is :

Options

A. `3.2 xx 10^(-22)m`
B. `2.0`
C. `1.6 xx 10^(-21)`
D. None of these

Answer

A

Explanation

`E = (mc).c or P +(E)/(c)`
` = (6 xx10^(6) xx 1.6 xx 10^(-19))/( 3xx 10^(8))`
` = 3.2 xx 10^(-21) kg m//s`