White light is incident from underwater on the water-air interface

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

White light is incident from underwater on the water-air interface. If the angle of incidence is slowly increased from zero, the emergent beam coming out into the air will turn from: (1) White to violet (2) White to red (3) White to black (4) None of these

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