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The work function of a photoelectric mat...

The work function of a photoelectric material is 3.3 eV. The thershold frequency will be equal to

A

`8 xx 10^(14) Hz`

B

`5 xx10^(33)Hz`

C

`8xx 10^(10)Hz`

D

`4 xx 10^(11)Hz`

Text Solution

Verified by Experts

The correct Answer is:
A
Thershold frequency `(v_(o)) = ("work function")/(h)`
`= (3.3 xx 1.6 xx 10^(-19) J)/(6.6 xx 10^(-34)Js) = 8 xx 10^(14) s^(-1)`
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