A point source of light is used in an ex...

A point source of light is used in an experiment on photoelectric effect . Which of the following curves best represents the variation of photo current (i) with distance (d) of the source from the emitter?

`a`

`b`

`c`

`d`

Text Solution

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The correct Answer is:

`I prop (I)/(d^(2))` and photo current `i prop I rArr I prop (1)/(d^(2))`

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