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Question

Assertion :The radius of two spheres are in the ratio 5:7. The volume of the spheres will be in the ratio 25:49 Reason: The Volume of a sphere is directly proportional to the square of its radius.

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 D Both Assertion and Reason are incorrect
Volume of sphere, V=43πr3
i.e., Vr3
V1V2=(r1r2)3=(57)3=125343
Hence, option D is correct

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