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The Figure shows a plot of photo current...

The Figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement ?
.

A

curves (a) and (b) represent incident radiations of same frequency but of different intensities.

B

curves (b) and (c) represent incident radiations of different frequencies and different intensities.

C

curves (b) and (c) represent incident radiations of same frequency having same intensity.

D

curves (a) and (b) represent incident radiations of different frequencies and different intensities.

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