From the photoelectric effect experiment, following observations are made. Identify which of these are correct.
A. The stopping potential depends only on the work function of the metal.
B. The saturation current increases as the intensity of incident light increases.
C. The maximum kinetic energy of a photo electron depends on the intensity of the incident light.
D. Photoelectric effect can be explained using wave theory of light.
Choose the correct answer from the options given below:
Answer: (C) B only
- A: false. $eV_0=h\nu-\phi$ depends on the frequency as well.
- B: true. More intense light ejects more electrons per second.
- C: false. $K_{max}$ is independent of intensity.
- D: false. The effect needs the photon picture.
Only B is correct.
Solution by Sreeraj P, M.Sc Physics