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Questions  

A photon of energy 3.4 eV is incident on a metal having work function 2 eV. The maximum K.E. of photoelectrons is equal to

a
1.4 eV
b
1.7 eV
c
5.4 eV
d
6.8 eV

detailed solution

Correct option is A

Kmax=E−Wo=3.4−2eV=1.4eV

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