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A photon of energy 8 eV is incident on a...

A photon of energy 8 eV is incident on a metal surface of threshold frequency `1.6xx10^(15)Hz` . What is the K.E. of the ejected photoelectrons in eV ?
`[h=6xx10^(-34)Js]`

A

6 eV

B

4 eV

C

2 eV

D

1 eV

Text Solution

Verified by Experts

The correct Answer is:
C
`1/2mv^(2)=hv-hv_(0)=8eV-6eV=2eV`
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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