The refractive index of a liquid depends on the y coordinate as n no y 1 If a ray of light is incident from air n 1 at origin at

Question

The refractive index of a liquid depends on the y coordinate as n no y 1 If a ray of light is incident from air n 1 at origin at a 3 in medium ngle 45 with the y axis then find the slope of the tangent on the path of the light ray when y 0 0 45 O 1 8n 1 16 1 32 1 X

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