Assertion :Diamonds are known for their spectacular brilliance, but diamonds found in nature rarely exhibit the brilliance. Reason: By cutting the diamond suitably, multiple total internal reflections can be made to occur.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion The critical angle for diamond-air interface is very small, therefore once light enters a diamond, it is very likely to undergo total internal reflection inside it. It is the technical skill of a diamond cutter which makes diamond to sparkle so brilliantly.