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The threshold frequency of a material is...

The threshold frequency of a material is `2xx10^14` Hz. What is its work function in eV ?

A

0.8275 eV

B

0.80 eV

C

0.7325 eV

D

0.9275 eV

Text Solution

Verified by Experts

The correct Answer is:
A
Given that,
`v_(0)=2xx10^(14)Hzphi=hv_(0)`
`=6.62xx10^(-34)xx2xx10^(14)`
`=1.324xx10^(-19)J`
`=(1.324xx10^(-19))/(1.6xx10^(-19))`
=0.8275 eV
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