What is the principle of reversibility of light? Show that the incident ray of light is parallel to the emergent ray of light when light falls obliquely on a side of a rectangular glass slab. [All India]
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The principle of reversibility of light states that light follows the same path if the direction of the travel of light is reversed. The refractive index of light when it passes from medium 1 to medium 2 is equal to the refractive index of light when it goes from medium 2 to medium .
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