In the photoelectric effect, the stopping potential depends uponA. frequency of incident lightB. nature of the emitter materialC. intensity of incident lightD. both A and B

In the photoelectric effect, the stopping potential refers to the minimum potential difference required to stop the flow of photoelectrons emitted from a material when exposed to light. The stopping potential depends on both the frequency of the incident light and the nature of the emitter material.

Option D, "both A and B," is correct. The frequency of the incident light (option A) determines the energy of the individual photons, while the nature of the emitter material (option B) determines the work function of the material, which is the minimum energy required to remove an electron from the material. The stopping potential is directly related to the difference between the energy of the incident photons and the work function of the material. Therefore, both the frequency of the incident light and the nature of the emitter material play a role in determining the stopping potential in the photoelectric effect.