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If P, Q and Rare physical quantities hav...

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

A

`(PQ)/(R)`

B

`(P-Q)/(R)`

C

`(PR - Q^(2))/(R)`

D

PQ - R

Text Solution

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The correct Answer is:
B
(b): Physical quantities of different dimensions can not be subtracted.
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