Find Wavelength of Photons & Electrons as Function of Kinetic Energy

[prochatz]

1)How can I find the wavelength as a function of the kinetic energy i)for photons, ii)for electrons?

i)For photons.
I think that I found it. I used the relation: E^2=c^2*p^2+(mc^2)^2
The photon's rest mass is 0. So we get: E=c*p
p=E/c ---> p=h*v/c --->p=h/λ
Finally: λ=c*h/E

ii)For electrons.
I don't know what to do. Do I have to use the same equations?

 

[Meir Achuz]

For the electron use pc=\sqrt{E^2-m^2c^4}, and then substiltute
T=KE=E-mc^2, so E=T+mc^2.

 

[prochatz]

For the electron use pc=\sqrt{E^2-m^2c^4}, and then substiltute
T=KE=E-mc^2, so E=T+mc^2.

I assume K is the kinetic energy, but what's T?

 

[inha]

KE=kinetic energy, T is standard notation for it too.

 

[prochatz]

I assume K is the kinetic energy, but what's T?

Never mind, got it

 

[prochatz]

KE=kinetic energy, T is standard notation for it too.

Thanks INHA.