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
