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Question
The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in figure, the path shown is correct?
Options
1
2
3
4
Solution
2
Explanation:
Here, light ray goes from (optically) rarer medium air to optically denser medium turpentine, then it bends towards the normal, i.e., θ1 > θ2 whereas when it goes from optically denser medium turpentine to rarer medium water, then it bends away the normal.
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