Dual Nature of Radiation and Matter — Physics STD 12 — Question
Tamilnadu BoardEnglish MediumSTD 12PhysicsDual Nature of Radiation and Matter2 Marks
Question
Why is a photo-cell also called an electric eye?
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Answer
Like an eye, a photo-cell can distinguish between weak and intense light. But a photocell gives a measure of light intensity in terms of photoelectric current. So it is also called an electric eye.
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