How to Calculate the Kinetic Energy of a Photon Using the de Broglie Hypothesis

[zcapa14]

some help with this past exam question would be appriciated...

"Calculate the value of the kinetic energy in eV at which the de Broglie wavelength of a photon is comparable with the size of an atom (~10^-10 m)"


Thanks...

 

[Doc Al]

The energy of a photon is given by $E = h \nu$.

 

[Adrian Baker]

We use $E = hf$ in most UK schools, Doc Al, not $E = h \nu$
(I don't know why we use different symbols for the same thing... it can cause confusion!)

 

[dextercioby]

Please,post future problems in the Homework Section of this forum.

Daniel.

 

[Kruger]

I hate the second form of expressing the energy of a photon (E=hv). Because the "v" can't really be differed from the velocity, ... (the signs are almost the same).

 

[Doc Al]

We use $E = hf$ in most UK schools, Doc Al, not $E = h \nu$

I'll have to keep that in mind.