The diagram shows the basic setup for the production of X-rays. `A_(1)` and `A_(2)` are two ammeters, reading `2.55A` and `2.566A` respectively. F is a filament which is alos the cathode. The potential difference applied between P and Q is `50000 V`. Assume that all X-rays photons have the maximum possible energy and that one X-ray photon is emitted for every `100` electron incident on the target. You may assume that the kinetic energy of other electrons reappear as heat in the tube.
The momentum of each X-ray photon is approximately

Options

A. `3 xx 10^(-17) kg ms^(-1)`
B. `3 xx 10^(-20) kg ms^(-1)`
C. `3 xx 10^(-23) kg ms^(-1)`
D. `3 xx 10^(-26) kg ms^(-1)`

Answer

C