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A photon of energy 4 eV imparts all its ...

A photon of energy 4 eV imparts all its energy to an electron leaves a metal surface with 1 eV of kinetic energy . What is the work function of the metal ?

A

3 eV

B

5 eV

C

1 eV

D

4 eV

Text Solution

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The correct Answer is:
A
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