Question

1.5 mW of 400 nm light is directed at a photoelectric cell. If 0.1% of the incident photons produce photoelectrons, find the current in the cell.
A. `0.36 muA`
B. `0.48 mu A`
C. `0.42 mu A`
D. `0.32 muA`

Answer 1

Correct Answer - B
(a) `P = (underset(.)(N)hc)/(lambda)` , (b) `underset(.)(n) = (0.1)/(100)underset(.)(N)`, (c) `underset(.)(i) = underset(.)(n)e`