posted by Matthew on .
A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron.
How many photons per second are striking the photocell?