[" 9.A solar cell works on the principle of "],[[" (1) photoelectricity "," (2) photographic camera "],[" (3) photovoltaic conversion "," (4) photosynthesis "]]

Describe the working principle of a solar cell.

(a) Explain solar cell panel. (b) Give the principle of working of a windmill.

Explain the working principle of a solar cell. Mention its applications.

The photoelectric work function of the emitter of photoelectric cell is 2 eV.Whenemitter is irradiated by monochromatic light of certain wavelength, the photoelectric current can just be reduced to zero by applying stopping potential of 1.5 V. Find the wavelength of incident light.

Work function of metal in photoelectric effect is 3.5 eV for -1.2 V potential photoelectric current become zero,Hence…….