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why do light rays always bend towards the normal after refracting form denser to rarer medium

why do light rays always bend towards the normal after refracting form denser to rarer medium

Grade:12

1 Answers

RAHUL ROHILLA
askIITians Faculty 873 Points
5 years ago
In this case, the angle ofrefraction(r)isgreater than the angle of incidence (i). Also, waterisan opticallydenserthan air, sowhenabeamoflightenters into air, it bends away from thenormal.Whenarayoflightgoes from ararer mediumto adenser medium, its speed decreases or it slows down.

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