If P, Q and Rare physical quantities having different dimensions, which of the following combinations can never be a meaningful quantity?

If P, Q and Rare physical quantities having different dimensions, whic

1.	If P, Q and Rare physical quantities having different dimensions, which of the following combinations can never be a meaningful quantity?
Answer» `(PQ)/(R )` `(P-Q)/( R)` `(PR -Q^2)/(R )` `PQ-R` Solution :APPLYING the principle of homogeneity, we can arrive at the correct OPTION.

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If P, Q and Rare physical quantities having different dimensions, which of the following combinations can never be a meaningful quantity?

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