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Photoelectric effect (A photocell) is used in the - Electronic ignition circuits - Automatic door opener - Detection of traffic law defaulters - Reproduction of sound in motion pictures - In the television camera for scanning and telecasting scenes

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Photoelectric effect (A photocell) is used in the - Electronic ignition circuits - Automatic door opener - Detection of traffic law defaulters - Reproduction of sound in motion pictures - In the television camera for scanning and telecasting scenes






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