43 Light coming from a discharge tube filled with hydrogen

Last updated: 6/10/2023

43 Light coming from a discharge tube filled with hydrogen falls on the cathode of the photoelectric cell The work function of the surface of cathode is 4eV Which one of the following values of the anode voltage in volts with respect to the cathode will likely to make the photo current zero a 4 c 8 b 6 d 10