Calculating KE of Slowest Emitted Photoelectron

[kingyof2thejring]

how do you calculate the kintetic energy of the slowest emitted photoelectron? i know how to calculate the KE of the fastest emitted photoelectron.

 

[rsk]

?Not sure I get this

Surely there is a spectra of ke from 0 - ke.max, so the lowest possible ke = 0 which gives v=0?

- does v=0 count as slow or stopped?

What exactly is the wording of the question?

 

[James R]

I assume you're talking about the photoelectric effect. The slowest emitted photoelectron is emitted with speed zero.

 

[timmy]

hf=work function of metal + 1/2mv2...slowest emitted electron would be when hf=work function metal so leaving zero kinetic energy for emitted electrons resulting in 0 velocity.