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Radiation of energy 6.5 eV is incident ...

Radiation of energy 6.5 eV is incident on a metal surface whose work function is 4.2 eV. What is the potential difference that should be applied to stop the fastest photoelectrons emitted by the metal surface ?

A

0.15 eV

B

ranging from 0 to 0.15 eV

C

ranging from 0 to 2.25 eV

D

ranging from 2.25 eV to 2.40 eV.

Text Solution

Verified by Experts

The correct Answer is:
B
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