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The cathode of a photoelectric cell is c...

The cathode of a photoelectric cell is changed such that the work function changes from `(W_(1) to W_(2) (W_(2) gt W_(1))`. If the current before and after change are `I_(1)` and `I_(2)`, all other conditions remaining unchanged , then (assuming `hv gt W_(2)`)

A

`I_(1) lt I_(2) lt 2I_(1)`

B

`I_(1) gt I_(2)`

C

`I_(1) lt I_(2)`

D

`I_(1) = I_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
The photoelectric current depends upon the intensity of the incident light. It does not depend upon the work function `(W_(0))` of the photosensitive surface, as long as `hv gt W_(0)`. In this case, there is no change in the intensity of the incident light. Hence `I_(1)=I_(2)`.
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