# Homework Help: Properties that determines the energy of a photon

1. Nov 1, 2009

### songoku

1. The problem statement, all variables and given/known data
Which of the properties listed below determines the energy of a photon

a. wavelength
b. intensity of the beam
c. speed of the photon
d. polarization
e. frequency

2. Relevant equations

$$E=hf=h\frac{c}{\lambda}$$

3. The attempt at a solution
Based on the equation, the answer can be (a) or (e) ??

Thanks

2. Nov 1, 2009

Right!

3. Nov 1, 2009

### songoku

Thanks a lot Doc Al