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Photons of energy 6 eV are incident on a...

Photons of energy `6 eV` are incident on a metal surface whose work function is `4 eV`. The minimum kinetic energy of the emitted photo - electrons will be

A

1 eV

B

2 eV

C

zero eV

D

5 eV

Text Solution

Verified by Experts

The correct Answer is:
C
K.E.`=1/2mv^(2)=h(v-v_(0))`
It is minimum, when `v=v_(0)` and it is zero.
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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