Maximum kinectic energy of an emitted photon by a photo cell is 2eV. What is stopping potential?

if the maximum k.E. of electrons emitted by a photocell is 4 eV, what is the stopping potential?

What is potential energy?

Find Energy of each photon in eV .

State the influence of work function on kinetic energy of electrons emitted in a photocell. If the intensity of the incident radiation is doubled, what changes occur in the stopping potential and photoelectric current?

State the dependence of work function on kinetic energy of electrons emitted in a photocell. If the intensity of the incident radiation is doubled, what changes occur in the stopping potential and photoelectric current?