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What principle states that any ray of light subjected to reflection or refraction can be traced in reverse by a ray in the opposite direction?

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User Hypheni
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1 Answer

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Answer:

The principle of reversibility of light.

Step-by-step explanation:

The principle of reversibility of light states that the path of a ray of light is reversible. If a ray of light, after suffering a number of reflections and/or diffractions, is allowed to fall normally on a mirror, it retraces its path along reverse direction.

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User Scolytus
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