cse • paper_1 • waves_oscillations
[UPSC CSE 2019] Geometrical Optics (Q135, 20M)
Prove that when light goes from one point to another via a plane mirror, the path followed by light is the one for which the time of flight is the least.
Prove that when light goes from one point to another via a plane mirror, the path followed by light is the one for which the time of flight is the least.
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