A 193-nm-wavelength UV laser for eye surgery emits a 0.500 mJ pulse. How many photons does the light pulse contain?
The Formula for the energy of a single photon of a given wavelength is
so now we can write like this
the formula for the number of photons in the pulse is
so we can write
The Answer for A 193-nm-wavelength UV laser for eye surgery emits a 0.500 mJ pulse
Using the formula E = hc/λ
we can find out how much energy a single photon of wavelength 193 nm has.
E = Planck Constant * Speed of Light/193 nm