The graph I2 corresponds to radiation of higher intensity [Note: Deduct this 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.
Detailed Answer :
The graph between photo electric current i and applied voltage V of equal frequency and different intensity I1 and I2, where I2 > I1, dark line shows higher intensity.
