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The work function for AI, K and Pt is 4....

The work function for AI, K and Pt is 4.28 eV, 2.30 eV and 5.65 eV respectively. Their respective threshold frequencies would be

A

`pt gt AL gt K`

B

`Al gt pt gt K`

C

`K gt AL gt pt`

D

`Al gt K gt pt`

Text Solution

Verified by Experts

The correct Answer is:
A
As `W_(0) = hv_(0)"i.e.", W_(0) prop V_(0)`
`V_(0) ("pt") gt V_(0) ("AL") gt V_(0) (K)`
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