Question

How many x-ray photons per second are created by an x-ray tube that produces a flux of x rays having a power of 1.00 W? Assume the average energy per photon in 78.0 keV.

Answer 1

The correct solution is "
`8.012* 10^(13) \ per/sec`".

Step-by-step explanation:

Given:

Power,

P = 1.00 W

Time,

t = 1 sec

Average energy,

E₀ = 78.0 KeV

Or,

=
`78.0* 10^3* 1.6* 10^(-19)`

=
`124.8* 10^(-16) \ J`

As we know,

⇒
`Power =(Total \ energy)/(Time)`

or,

⇒
`P=(nE_0)/(t)`

⇒
`1.00=(n(124.8* 10^(-16)))/(1)`

⇒
`n=8.012* 10^(13) \ per/sec`