A cesium photo cell, with a steady potential difference of 60 volt across it, is illuminated by a small bright light placed 50 cm away. When the same light is placed one meter away, the photoelectrons emerging from the photo cell : (assume that potential difference applied is sufficient to produce saturation current)
Text Solution
Verified by ExpertsThe correct answer is:
D
As the distance of the source doubles, the photons falling on the photon cell becomes 
th. Hence, number of photoelectrons will also become 
th.
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