Assertion : The method of dimensions analysis cannot always validate the exact relationship between physical quantities in an equation.
Reason : It does not distinguish between the physical quantities having same dimensions.

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A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

Both A and R are true and R is the correct explanation of A.

A is false and R is also false.

answer is B.

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Detailed Solution

The method of dimensions can only test the dimensional validity but not the exact relationship between physical quantities in any equation. This is because it does not say about the value of constants .

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