(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The work function of zinc is 4.31eV. What is the maximum wavelength of light that will cause electrons to be emitted from a zinc surface?

2. Relevant equations

I'm not sure because, we are given the Work Function (W) which is 4.31eV and we need to find the max. wavelength (λ) so we will need a couple equations)

v = fλ (v = speed of light)

W = hf_{0}(f_{0}= threshold frequency)But we already know the Work Function

3. The attempt at a solution

I'm completely stumped. I have looked through the protons section in the book "Physics Key Ideas Part 2" but have yet to find anything like this. I would be extremely happy if someone could point me in the right direction on what equations I would need to use.

If you would like to see the equation sheet we are given, it can be downloaded here:

http://www.ssabsa.sa.edu.au/science/phys-formula-sheet.pdf [Broken]

Cheers for any help,

Nathan

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# Homework Help: Maximum Wavelength?

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