First slide

Photo Electric Effect

Question

The photoelectdc threshold of a certain metal is 3000 $Å$ . If the radiation of 2000 $Å$ is incident on the metal

Easy

A

electrons will be emitted
B

positrons will be emitted
C

protons will be emitted
D

electrons will not be emitted

Solution

The photoelectric will be emitted because wavelength o{ incident radiation is less than threshold wavelength $(λ < λ_{0})$

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