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

How would we find the potential difference given the frequency of the incident light and the kenetic energy of an the emitted electrons?

2. Relevant equations

E= hf-W

V= w/q

e= 1.602*10^-19

3. The attempt at a solution

Given: f= 7.4*10^15 Hz

KE= 1.9eV

Required: potential difference

Solution: KE= 1.9eV * 1.602*10^ -19 J/eV = 3.0438*10^-19

V= 3.0438*10^-19/ 1.602*10^ -19 = 1.9

The answer is supossedd to be 2.7, I dont think I'm doing this the correct way.

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# Homework Help: Potential Difference

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