A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in_______________?
Correct answer: C. Light intensity
- A. Flux density
- B. Current
- C. Light intensity
- D. Voltage
Explanation
Photoelectric transducers detect a change in light intensity and convert it into an electrical signal such as current or voltage. Thus, the measured parameter must produce a variation in light intensity.
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