Question

write any two uses of photo cell​

Answer 1

Photocells act as light sensors. Inlike infrared sensors that are good for line followers or detecting the presense of an object, photocells are good when you just want to detect light. For example, you might want a sensor that detects when a flashlight is on, or when the sun is out. Photocells are used in automatic night lights and in street lamps that turn themselves on at night. Sometimes known as photoresistors, photocells are available from a number of sources..

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