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. `I_(1) = I_(2)`
B. `I_(1) lt I_(2)`
C. `I_(1) gt I_(2)`
D. `I_(1) lt I_(2) lt 2I_(1)`

Answer

A

Explanation

The work function has no current so long as `hv gt W_(0)`. The photoelectric current is proportional to the intensity of light . Since there is no change in the intensity of light , therefore `I_(1) - I_(2)`.