Question
1.5 mW of 4000 Å light is directed at a photoelectric cell. If 0.10 per cent of the incident photons produce, photoelectrons, find the current in the cell.
[Given: h = 6.6 × 10–34 J-s, c = 3 × 108 m/s and e = 1.6 × 10–19 C]
Options:
0.12 μA
0.24 μA
0.36 μA
0.48 μA