Which medium is optically denser and which is optically rarer
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Answer:
PQ is denser while QR is rarer.
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Answer:
No PQ is travelling in optically rarer and QR is in optically denser.
Explanation:
if it were the opposite the incident would go up away from the normal(dotted lines).
Light travels slower in denser mediums which in turn brings the incident ray towards the normal not away from it.
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