Photoelectric effect wavelength

[blindsided]

This is not a specific question; I'm just unclear about a concept.

Homework Statement

Given the kinetic energy of an electron emitted, how would you find the wavelength?

Homework Equations

E=h*frequency

or

E=0.5mv²

The Attempt at a Solution

I'm thinking I would use the secon equation, find v, then use de Broglie's relationship to find wavelength. Am I on the right track?

 

[Doc Al]

I'm thinking I would use the secon equation, find v, then use de Broglie's relationship to find wavelength. Am I on the right track?

Assuming that the question is to find the de Broglie wavelength of the electron, then you are on the right track.

 

[blindsided]

Hmm...
The question hadn't specified de broglie wavelength- hence my confusion as to whether I would use de Broglie's relationship or just Planck's equation.
I thought Planck's equation only pertained to EM radiation?

 

[Doc Al]

Post the question word for word as it was given to you.