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  4. A ray of light travels from an optically denser to a rarer medium. The critical angle for the two media is C. The maximum possible deviation of the ray will be

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Q. A ray of light travels from an optically denser to a rarer medium. The critical angle for the two media is C. The maximum possible deviation of the ray will be

KCETKCET 2002Ray Optics and Optical Instruments

Solution:

When $i_1 $ > C, deviation is maximum , Here d = $\pi$ - 2C