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define work function of a metal?

define work function of a metal?

Grade:8

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
9 years ago
The work function is the minimum amount of energy needed to pop an electron out of the metal. A photon at the cutoff frequency/wavelength carries exactly that minimum energy:
E = phi = h nu = h c / lambda.
Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty

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