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Q.

Is it true that if a light ray goes from air to water it is bent towards the normal?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
We know that “a light ray travelling from an optically denser to a rarer medium, bends away from the normal. When the ray travels from an optically rarer to a denser medium, it bends towards the normal.” For example, a light ray entering the water from the air will bend toward the normal because water is optically denser than air.
 
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