A ray of light traveling in air enters obliquely into water . Does the light ray bend towards or away from the normal ?Why ?
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Hey!
The light ray bends towards the normal.
A light ray travelling from a rarer to a denser medium always bends towards the normal as its speed decreases.
In this case, water is more denser than air. Therefore, the ray bends towards the normal because its speed reduces when it travels from the rarer medium (air) to the denser medium (water).
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The light bends towards the normal on entry into water. It is due to the fact that as compared to air, the water is optically denser medium.
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