There are two sources of light, each emitting with a power of 100 W. One emits X-rays of wavelength 1 nm and the other visible light at 500 nm. Find the ratio of number of photons of X-rays to the photons of visible light of the given wavelength?

Hint: The energy of photons depends on the wavelength of the rays.

Step 1: Find the ratio of photons.

Suppose the wavelength of X-rays is ${\lambda }_{1}$, and the wavelength of visible light is ${\lambda }_{2}$.

Also,  represents the number of photons of X-rays and visible light emitted from the two sources per sec.