First slide

Photo Electric Effect

Question

The photoelectric threshold wavelength of a certain metal is 3000 A. If the radiation of 2000 A is incident on the metal

Very Easy

A

Electrons will be emitted
B

Positrons will be emitted
C

Protons will be emitted
D

Electrons will not be emitted

Solution

$For electron emmision λ_{incident} < λ_{o}$

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