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What do you mean by critical angle ?
Critical angle means: the smallest possible angle of incidence for which light rays are totally reflected at an interface between substances of different refractive index.
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Asked 12/22/2010 6:13:02 AM
Updated 137 days ago|6/2/2018 12:54:16 PM
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Edited by yumdrea [6/2/2018 12:54:16 PM]
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Critical angle means: the smallest possible angle of incidence for which light rays are totally reflected at an interface between substances of different refractive index.

Added 137 days ago|6/2/2018 12:54:14 PM
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