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Assertion (A) : Diamond is used for cutting glass.
Reason (R) : Diamond has a high refractive index.

A.A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is NOT the correct explanation of A.
C.A is true but R is false.
D.A is false but R is true.
Answer and Feedback
Answer:B
Feedback:Diamond is very hard due to its rigid three-dimensional structure and so, it is used for cutting glass. Refractive index of diamond is high and gives it the greater transparency and brilliance.

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