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Question

A beam of light passes from the air through a thick piece of glass as shown in the figure. Identify which of the following angles best describe the angle of refraction?

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A
1
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B
2
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C
3
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D
4
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E
5
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Solution

The correct option is B 4
When light travels from rarer medium to denser medium it bend towards the normal as it changes direction this process is known as refraction . Angle of refraction is measured from the normal (drawn at the interface of the two mediums) to the refracted ray.
Therefore option D is correct.

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