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Refraction at Curved Surfaces

18.Parallel l...

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18.Parallel light rays are falling on the plane surface of a semi cylinder made of glass, at an angle of 45 degree in such a plane which is perpendicular to the axis of the semi cylinder. Index of refraction is 1.414. Geomatrically show the light rays which will come out of curved part of cylinder. If arc of the emerging rays , subtends a central angle of 15X degree, calculate X.

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