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A photo-cell with a constant p.d. of V volts across it, is illuminated by a point source from a distance 25 cm. When the source is moved to a distance of 1 m, the electrons emitted by the photo-cell A. carry 1/4th their previous energy B. are 1/16th as numerous as before C. are 1/4th as numerous as before D. carry 1/4th their previous momentum

aditya kashyap , 11 Years ago
Grade upto college level
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Saurabh Koranglekar

Last Activity: 4 Years ago

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