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

A photon of energy 4 eV imparts all its energy to an electron that leaves a metal surface with 1.1 eV of kinetic energy. The work function of the metal is

2.9 eV

5.1 eV

3.64 eV

4.4 eV

Text Solution

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The correct Answer is:

Work function = Incident energy - K.E of electron = 4eV - 1.1 eV = 2.9 eV

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