Physics And Measurement Question 340
Question: If $ u _{1} $ and $ u _{2} $ are the units selected in two systems of measurement and $ n _{1} $ and $ n _{2} $ their numerical values, then
[SCRA 1986]
Options:
A) $ n _{1}u _{1}=n _{2}u _{2} $
B) $ n _{1}u _{1}+n _{2}u _{2}=0 $
C) $ n _{1}n _{2}=u _{1}u _{2} $
D) $ (n _{1}+u _{1})=(n _{2}+u _{2}) $
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Answer:
Correct Answer: A
Solution:
Physical quantity (p) = Numerical value (n) $ \times $ Unit (u) If physical quantity remains constant then n µ 1/u \ n1u1 = n2u2 .
