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The anode voltage of photocellis kept fi...

The anode voltage of photocellis kept fixed. The wavelength `lambda` of the light falling on the cathode is gradually changed. The plate current `I` of the photocell varies as follows:

A

B

C

D

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The correct Answer is:
D
As `lambda` is increased, there will be a value of `lambda` above which photoelectrons will be cease to come out so photocurrent will beocme zero. Hence `(4)` is correct answer.
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RESONANCE-ATOMIC PHYSICS-Exercise -3 part -I JEE (Advanced)
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