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A photoelectric cell is connected to a source of variable potential difference, connected across it and the photoelectric current resulting (μA) is plotted against the applied potential difference (V). The graph in the broken line represents one for a given frequency and intensity of the incident radiation. If the frequency is increased and the intensity is reduced, then which of the following graphs of unbroken line represents the new situation?

Option: 1

A


Option: 2

B


Option: 3

C


Option: 4

D


Answers (1)

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As we learned

 

Effect of potential on photoelectric current -

For a fixed frequency and intensity of incident light the photoelectric current  increases in +ve potential applied to the anode

- wherein

 

 

Intensity reduces, therefore, saturation current decreases. frequency increased, therefore stopping potential increased.

 

Posted by

Rakesh

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