A 5.0 MW UV laser emits light that has a wavelength 350 nm.If the duration of the pulse is 10 ns,how many photons are there in each pulse? A)8.8 * 10¹⁶ B)12.3 * 10¹⁸ C)62.5 * 10²⁰ D)89.1 * 10²⁰

Question

Quizplus · Accepted Answer

The energy of each photon is calculated using E = hc/λ. The total energy of the pulse is power multiplied by time. Dividing the total energy by the energy per photon gives the number of photons.

A 50 MW UV Laser Emits Light That Has a Wavelength