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)`)

Options

A. `l_(1)=l_(2)`
B. `l_(1) lt l_(2)`
C. `l_(1) gt l_(2)`
D. `(W_(1))/(W_(2))=(l_(1))/(l_(2))`

Answer

A

Explanation

Photocurrennt depends only on intensity of light. As in given problem, only work function is changed, so current values will remain same.