# How do you use Planck's constant to determine frequency of a photon (given t frequency) or the energy (given the frequency)?

Mar 18, 2017

using Planck - Einstein relation

#### Explanation:

Using the equation E = h v

where
E is the energy
h is planks constant
v is frequency

If energy is given then frequency can be determined as

v = E/h

If frequency is given energy can be determined as

E = h v