A photocell connected in an electrical circuit is placed at a distance 'd' from a source of light . As a result , current I flows in the circuit . What will be the current in the circuit when the distance is reduced to ' d/2 ?

A photocell connected in an electrical circuit is placed at a distance

1.	A photocell connected in an electrical circuit is placed at a distance 'd' from a source of light . As a result , current I flows in the circuit . What will be the current in the circuit when the distance is reduced to ' d/2 ?
Answer» I 2I 4I I/2 Solution :[Hint : PHOTOELECTRIC CURRENT is directly proportional to the intensity of intensity of incident light and intensity of light is inversely proportional to the SQUARE of the DISTANCE between photocell and SOURCE of light]

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A photocell connected in an electrical circuit is placed at a distance 'd' from a source of light . As a result , current I flows in the circuit . What will be the current in the circuit when the distance is reduced to ' d/2 ?

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