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in Physics by (79.8k points)

A photo-cell is illuminated by a source of light, which is placed at a distance d from the cell. If the distance become d/2, then number of electrons emitted per second will be 

(a) remain same 

(b) four times 

(c) two times 

(d) one-fourth

1 Answer

+1 vote
by (83.4k points)
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Best answer

The correct option is (b) four times.

Explanation:

Intensity becomes 4 times. So number increases.

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