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What is the stopping potential, when a m...

What is the stopping potential, when a metal surface with work function 1.2 eV is illuminated with light of energy 3 eV ?

A

1.8 V

B

4.2 V

C

2.1 V

D

0.8 V

Text Solution

Verified by Experts

The correct Answer is:
A
`eVs=E-W_(0)`
`:.V_(s)=(E)/(e)-(W_(0))/(e)=(3e)/(e)-(1.2eV)/(e)=1.8V`
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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