The cells which need no source of emf and are frequently used as exposure metres in photography are:
A. Photodiodes
B. Photo conductive cells
C. Photo voltaic cells
D. Silicon diode
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silicon diode................
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Light Sensors
Light Sensors are photoelectric devices that convert light energy (photons) whether visible or infra-red light into an electrical (electrons) signal
Light Sensors are photoelectric devices that convert light energy (photons) whether visible or infra-red light into an electrical (electrons) signal
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