First slide

Photo Electric Effect

Question

Intensity of light incident on a photo sensitive surface is doubled. Then

Very Easy

A

the number of emitted electrons is trebled
B

the number of emitted electrons is doubled
C

the K.E. of emitted electrons is doubled
D

he momentum of emitted electrons is doubled

Solution

Number of photoelectrons emitted depends on Intensity of incident radiation( $i \propto I$ )
Kinetic energy of emitted photoelectrons is independent of intensity of incident radiation

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