Photoelectric current depends on(A) the intensity of incident light(B…

The correct answer is Option (2) → (A), (B) and (C) only

The photoelectric current is set by the number of electrons emitted per second and by how many of them reach the collector.

(A) the intensity of incident light — Correct. Above the threshold frequency, the photocurrent is proportional to the intensity, since each photon ejects at most one electron.

(B) the potential difference applied between the two electrodes — Correct. The current rises with the accelerating potential until it saturates, and falls to zero at the stopping potential.

(C) the nature of the emitter material — Correct. The material fixes the work function and the threshold frequency, so it decides whether, and how many, electrons are emitted for a given light.

(D) the conductivity of the emitter material — Incorrect. Emission depends on the work function at the surface, not on the electrical conductivity of the emitter.

NCERT (2026-27):
Summary – “… Photoelectric current depends on (i) the intensity of incident light, (ii) the potential difference applied between the two electrodes, and (iii) the nature of the emitter material.”