11. Monochromatic light of wavelength 500 nm falls on a metal cathode to produce photoelectrons. The intensity of the light at the metal surface is 100 Joules/m^2/s.

a. What is the energy of a single photon of this light? (3.98 x 10-19 J)

b. How many photons fall on one square meter in one second? (2.51 x 1020)

c. If the cathode is a square which is 5.00 cm on a side, how many electrons are being released per second, assuming that every photon releases one photoelectron? How big a current would this produce? (6.28 x 1017, 0.101 A)

**Please try to solve c as I have already solved a and b. Thank you