A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? Why?
Solution and Explanation
The light ray bends towards the normal.
When a ray of light travels from an optically rarer medium to an optically denser medium, it gets bent towards the normal. Since water is optically denser than air, a ray of light travelling from air into the water will bend towards the normal.
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