A photocell with a constant potential difference of V volt across it illuminated by a point source from a distance of 25 cm. when the source is moved to a distance of 1m. The electrons emitted by the photocell.

Carry 1⁄4th their previous energy.

Are 1/16th as numerous as before.

Are 1/4th as numerous as before.

Carry 1/4th their pervious momentum

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A photocell with a constant potential difference of V v... | Physics MCQ #135 | Examora | Examora