lowest possible frequency photoelettric emission

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Chem_Mod
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lowest possible frequency photoelettric emission

Postby Chem_Mod » Sun Dec 04, 2011 2:03 am

if you are given a work function and it asks you to determine the lowest frequency possible that will cause photoelectric emission are we just supposed to use the formula : wavelength= (hc)/( the work function as the energy)?

Chem_Mod
Posts: 18193
Joined: Thu Aug 04, 2011 1:53 pm
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Re: lowest possible frequency photoelettric emission

Postby Chem_Mod » Sun Dec 04, 2011 2:04 am

This formula is valid if you have to work function and want to get the longest wavelength of the light that will cause photoelectric emission. This problem is asking for frequency and so you should use the equation workfunction=hv where nu (v) is the frequency.


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