It is a device based on phenomena of photoelectric effect which converts light energy into electricity energy.
PHOTOELECTRIC EFFECT-The phenomenon of emission ofma electrons from a metal surface whenWhich is suitable for isbp incident on it, is called photoelectric effect. The electrons emitted during photoelectric current, are calledm photoelectrons
APPLICATION OF PHOTOELECTRIC-.In reproduction of sound in cinema, television and photo telegraphy to control the temperature in furnace and in chemical proceses. . In automatic doors In photoelectric counters In automatic switches for street lights In photoelectric sorters.
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