Answer to Question #237183 in General Chemistry for blake

Question

A laser pulse with a wavelength of 525 nm

nm contains 4.40 mJ

mJ of energy. How many photons are in the laser pulse?

Answer 1

The laser pulse in this question has a wavelength of

. To solve this problem, we first have to calculate the energy of a single photon in the laser pulse. The equation for calculating the energy of a single photon of an electromagnetic wave is where

is the speed of light, is planks constant and is the wave length of the photons.

= 1.16 × 10¹⁶ photons