Photoelectric EffectMedium

Question

Work function of metal surface is 1.6 × 10-19 joule. When light of 6400 wave length incident on this surface then maximum kinetic energy of photo electron (in Joule) is :   

Options

A.14 × 10-19
B.2.8 × 10-19
C.0.14 × 10-19
D.1.5 × 10-19

Solution

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