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

The anode voltage of a photocell is kept fixed. The wavelength lamda o

1.	The anode voltage of a photocell is kept fixed. The wavelength lamda of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows:
Answer» Solution :As `LAMBDA` is increased, there will be a value of `lambda` above which photo electrons will cease to come out, so photo CURRENT will become zero finally, hence (c) is correct GRAPH.

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

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