Question:medium
Optical sensors used for the displacement measurement works on the principle:
Optical sensors used for the displacement measurement works on the principle:
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Think of the inverse-square law for light propagation: as distance from a source increases, the intensity of light falling on a fixed aperture decreases.
This simple geometric property is the basis of reflective optical displacement transducers.
This simple geometric property is the basis of reflective optical displacement transducers.
Updated On: Jul 6, 2026
- Intensity of light increases with distance
- Intensity of light decreases with distance
- Intensity of light remains constant with distance
- Intensity of light increases with time
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The Correct Option is B
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