Electrons are from the surface of a metal when it's expected to light. This is called...

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Electrons are from the surface of a metal when it

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Answer 1

Answer #1

Cesium work function Wo = 2.1 eV

e =1.6x10^-19 C, h =6.63x10^-34 J.s

For thresholf frequency maximum kinetic eenrgy Kmax = 0

From Einstein Photo electric effect

E = Wo+Kmax

E =Wo =2.1 eV

hfo = 2.1x1.6x10^-19J

fo = (2.1x1.6x10^-19)/(6.63x10^-34)

Threshold frequency fo = 5.068x10¹⁴ Hz

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Answer 2

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Electrons are emitted from the surface of a metal when it's exposed to light. This is...

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