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The work function of a substance is 1.6 ...

The work function of a substance is 1.6 ev. The longest wavelength of light that can produce potoemisson form the substance is

A

`7750 Å`

B

`3875 Å`

C

`5800 Å`

D

`2900 Å`

Text Solution

Verified by Experts

The correct Answer is:
A
`lambda = (12375)/(1.6) = 7734 Å`
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