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The work function for a metal is 4eV. To...

The work function for a metal is 4eV. To emit a photo electron of zero velocity from the surface of the metal, the wavelength of incident light should be:

A

2700`overset@A`

B

1700 `overset@A`

C

5900 `overset@A`

D

3100`overset@A`

Text Solution

Verified by Experts

The correct Answer is:
D
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