Question

How do you find the wavelength of energy with photons????

Answer 1

The energy \(E\) of a photon of frequency \(f\) is \[E = hf\] where \(h\) is planks constant.

To get the wavelength \(\lambda\) use the relation for EM radiation\[c= f\lambda\] where \(c\) is the speed of light.

Answer 2

can you help me work out a problem so i better understand? if a photon has an energy of 8.6 x 10^-19 J, how will i find out the wavelength?

Answer 3

solve the equation: \(c = f\lambda\) for \(f\),

plug this into \(E=hf\),

rearrange the resulting equation to solve for \(\lambda\)

plug in the values for the energy and the constants