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

Answer:

The correct solution is "$8.012\times 10^{13} \ per/sec$".

Explanation:

Given:

Power,

P = 1.00 W

Time,

t = 1 sec

Average energy,

E₀ = 78.0 KeV

Or,

    = $78.0\times 10^3\times 1.6\times 10^{-19}$

    = $124.8\times 10^{-16} \ J$

As we know,

⇒ $Power =\frac{Total \ energy}{Time}$

or,

⇒         $P=\frac{nE_0}{t}$

⇒      $1.00=\frac{n(124.8\times 10^{-16})}{1}$

⇒          $n=8.012\times 10^{13} \ per/sec$