(a) State Snell's law of refraction of l...

(a) State Snell's law of refraction of light.
(b) A transparent medium A floats on another transparent medium B. When a ray of light travels obliquely from A into B, the refracted ray bends away from from the normal. Which of these two media A or B are optically denser and why ?

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(a) Statement of Snell's law , (b) Medium 'A' is optically denser.

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