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A photoelectric surface is illuminated s...

A photoelectric surface is illuminated successively by monochromatic light of wavelength `lambda` and `( lambda)/(2)`. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function at the surface of material is

A

`(hc)/(3 lambda)`

B

`(hc)/(4 lambda)`

C

`(hc)/(2 lambda)`

D

`(3hc)/(3 lambda)`

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The correct Answer is:
A
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