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A source of light is placed at a distanc...

A source of light is placed at a distance of 1 m from a photo cell and the cut off potential is found to be 5 V. If the source is kept at 1.5 m from the cell, then the cut off potential will be

A

7.5 V

B

10 V

C

5 V

D

3 V

Text Solution

Verified by Experts

The correct Answer is:
C
The cutoff potential does not depend upon the distance.
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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