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The maximum wavelength of radiation that...

The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm . The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

A

`12.4 eV`

B

`6.2 eV`

C

`100 eV`

D

`200 eV`

Text Solution

Verified by Experts

The correct Answer is:
B
`K_max(eV)=12375[1/(lambda(dotA))-1/(lambda_0(dotA))]`
`=12375 [1/1000-1/2000]=6.2 eV`
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