1.

Assertion (A) : Kerosene having higher refractive index is optically denser than water, although its mass density is less than that of water.Reason (R) : The speed of light decides whether a medium is optically rarer or optically denser. An optically denser medium may not possess greater mass density.(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).(C) Assertion (A) is true, but Reason (R) is false.(D) Assertion (A) is false, but Reason (R) is true.

Answer»

Correct answer is

(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).



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