A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it ?

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Solution

As glass is optically denser than air, the ray of light bends towards the normal.

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Light travels more quickly through water than through glass. (a) Which is optically denser : water or glass ? (b) If a ray of light passes from glass into water, which way will it bend : towards the normal or away from the normal ?

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