Physics And Measurement Question 241

Question: If P, Q, R are physical quantities, having different dimensions, which of the following combinations can never be a meaningful quantity?

Options:

A) $ (P-Q)/R $

B) $ PQ-R $

C) $ PQ/R $

D) $ (PQ-Q^{2})/R $

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $ [P]\ne [Q] $ so, $ P-Q $ is not meaningful



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