Photoelectric Effect Problem Solving (Max KE, threshold frequency, cutoff wavelength, E of photon)

[@soonjungsoonjung4484]

I was so frustrated with how to understand the maximum kinetic energy and how to get and solve cutoff wavelenght.
Now, I clearly understand these.
Thanks(very very very much)👍🙏

[@soonjungsoonjung4484]

so thankful to you😍😍

[@HuyLe-jl2fs]

nice video!

[@mangilitgiancarlod.613]

Can you answer to this problem.🥺
Problem:
The maximum wavelength that an electron wave can have and still eject electrons from a particular metal surface is 436nm. What is the work function E0 of this metal which has a maximum kinetic energy of 1.1 x 10 raised to -19 J.
a.) What is the frequency of light?
b.) What is the work function of the said metal?

[@D8vid]

a) 8.527e14 Hz
b) 2.84 eV