Physics · Ray Optics
Which one among the following correctly describes the principle of reversibility of light rays in an optical system?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Focal length remains unchanged
- 2Light retraces the same path when propagation direction is reversed in linear media✓
- 3Identical speeds in all media
- 4Equal intensity in forward and reverse paths
Correct answer
Light retraces the same path when propagation direction is reversed in linear media
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