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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 <img alt="\frac{d}{2}" s

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 \frac{d}{2} ?
Option: 1 I
Option: 2 2I
Option: 3 4I
Option: 4 \frac{I}{2}

Answers (1)

The number of electrons emitted per second is proportional to 1/d2. Therefore when d becomes d/2, I become 4I

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Safeer PP

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