When a point source of light is at a distance of one metre from a photo cell, the cut off voltag... VIDEO
When a point source of light is at a distance of one metre from a photo cell, the cut off voltage is found to be \( V \). If the same source is placed at \( 2 \mathrm{~m} \) distance from photo cell, the cut off voltage will behttps://bit.ly/YTAI_PWAP https://www.pw.live
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