Question

If a laser with a frequency of 2.70 x 10^15 Hz emits 7.35 x 10^-3 J of energy during a pulse, it emits a x 10^b photons. What are a and b?

Answer 1

use the frequency, \(\nu\), to find the energy of one photon

\(\huge E_{photon}=h\nu\)

Divide the total energy of the pulse by the energy of one photon to get the number of photons emitted.

Answer 2

I got it. Thank you so much!