CBSE 2023 · Region 5 · Set 3 · Q19 · 2 marks
Plot a graph showing the variation of photo electric current, as a function of anode potential for two light beams having the same frequency but different intensities $\displaystyle \mathrm{I}_{1}$ and $\displaystyle \mathrm{I}_{2}\left(\mathrm{I}_{1}>\mathrm{I}_{2}\right)$. Mention its important features.
Marking-scheme solution
Increase in intensity does not change the cut-off potential.
The increase in intensity increases the value of saturation current.Dual Nature of Radiation and MatterExperimental Study of Photoelectric EffectApplyvery_short_answermedium
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CBSE Class 12 Physics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.