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Stopping Potential Revisited

4 eV is the e...

Question

4 eV is the energy of the incident photon and the work function in 2eV. What is the stopping potential?

A

2V

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B

4V

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C

6V

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D

2 / s q r t 2 V

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Solution

The correct option is A 2V
$E = W_{0} + e V_{0} \Rightarrow 4 e V = 2 e V + e V_{0} \Rightarrow V_{0} = 2 v o l t$

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