The light rays having photons of energy ...

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 ?

3 eV

1.2 eV

0.6 eV

1.4 eV

Text Solution

Verified by Experts

The correct Answer is:

`eV_0 = E - phi_0 implies V_0 = (1.8 eV -1.2eV)/e = 0.6 V`

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