CBSE Class 12 Physics 2018 Delhi Set 1 Paper

Question : 3

Total: 26

Draw graphs showing variation of photoelectric current with applied voltage for two incident radiations of equal frequency and different intensities. Mark the graph for the radiation of higher intensity.

Solution:

The graph I2 corresponds to radiation of higher intensity [Note: Deduct this 1∕2 mark if the student does not show the two graphs starting from the same point.] (Also accept if the student just puts some indicative marks, or words, (like tick, cross, higher intensity) on the graph itself.

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