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Method of finding LCM

The maximum k...

Question

The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. the stopping potential in volts is

A

2

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B

4

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C

6

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D

10

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Solution

The correct option is B 4
Stopping potential is the negative potential applied to stop the electrons having maximum kinetic energy. Therefore, stopping potential will be 4 V.

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