A light of energy 5eV falls on a metal and the electrons with a maximum kinetic energy of 2eV are ejected. The work function of the metal is

a

0.4eV

b

2.5eV

c

3.0eV

d

7.0eV

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Correct Option
c

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Kel90
1 year ago

E of k.e = E - W, sooo it’s supposed to be added if E k.e comes to the back 4 sure

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