A photon of energy 3.4 eV is incident on a metal having work function – McqOptions

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1.	A photon of energy 3.4 eV is incident on a metal having work function 2 eV. The maximum K.E. of photo-electrons is equal to [MP PET 1991]
A.	1.4 eV
B.	1.7 eV
C.	5.4 eV
D.	6.8 eV
Answer» B. 1.7 eV

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