Question on: WAEC Physics - 2012

A metal with a work function of 3.0ev is irradiated with ultraviolet light of energy 4.0 ev. The kinetic energy of the ejected electron is

A
1.0eV
B
3.0eV
C
4.0eV
D
7.0eV
Ask EduPadi AI for a detailed answer
Correct Option: A

K.E = hf - Wo

= 4 - 3 = 1eV

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