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Question
The diagram given below in fig shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.

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Solution
Refracted ray 0 C is shown in each case.

Towards the normal or ∠r < ∠i

Away from the normal or ∠r > ∠i

Refracted ray goes undeviated
or
∠i = 0
∠r = 0
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