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

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

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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