## Atomic Spectra Online Module

H-Atom ($E_{n}=-\frac{hR}{n^{2}}$)

Richard_Yu_4B
Posts: 8
Joined: Wed Sep 21, 2016 2:56 pm

### Atomic Spectra Online Module

Question: In 1.0 s, a 60 W bulb emits 11 J of energy in the form of infrared radiation (heat) of wavelength 1850 nm. What is the energy per photon of light emitted?
How many photons of infrared radiation does the lamp generate in 1.0 s?

is there an equation that allows us to find the number of photons?

Josh Ku 3H
Posts: 25
Joined: Wed Sep 21, 2016 2:59 pm

### Re: Atomic Spectra Online Module

I'm not sure if there is a specific equation to solving this question but the method I used was to first find the energy of each photon and then divide the amount energy produced in one second (11J) by the energy of each photon. You would find the amount energy of each photon through the equation E = (h * c)/wavelenth (1850nm).