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The work function of photometal is 6.626...

The work function of photometal is 6.626 eV. What is the threshold wavelength ?

A

3921 `Å`

B

1875 `Å`

C

1867 `Å`

D

4433 `Å`

Text Solution

Verified by Experts

The correct Answer is:
B
`lambda_(0) = (hc)/(W_(0)) = (6.63 xx 10^(-34) xx 3 xx 10^(8) xx 10^(10))/(6.626 xx 1.6 xx 10^(-19)) Å = 1875 Å`
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