## Energy per Photon

405289292
Posts: 52
Joined: Thu Oct 03, 2019 12:16 am

### Energy per Photon

Can anyone help me solve this problem? -"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?"

MingdaH 3B
Posts: 133
Joined: Thu Jul 11, 2019 12:17 am

### Re: Energy per Photon

Use E=h(c/wavelength) to find the energy of one photon of wavelength 1850, and then divide 11J by the answer of the previous section in order to find the total amount of photons.

Maia_Jackson_2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

### Re: Energy per Photon

Another equation that might be relevant here is E = W(j/s)*t (s)

Victor James 4I
Posts: 50
Joined: Wed Sep 18, 2019 12:20 am

### Re: Energy per Photon

^^ not sure if that would be too helpful since its asking for the amount of photons given off, not amount of energy in joules

Hannah_1G
Posts: 100
Joined: Wed Sep 18, 2019 12:22 am

### Re: Energy per Photon

If the question is asking this but in a 2 second interval would you do the same but times it by 2?