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The light rays having photons of energy `1.8 eV` are falling on a metal surface having a work function `1.2 eV`. What is the stopping potential to be applied to stop the emitting electrons ?

A

`3 eV`

B

`1.2 eV`

C

`0.6 eV`

D

`1.4 eV`

Text Solution

Verified by Experts

The correct Answer is:
C
Stopping potential `= 1.8 eV - 1.2 eV = 0.6 eV`
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