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) \[({{n}_{1}}+{{u}_{1}})=({{n}_{2}}+{{u}_{2}})\]
Correct Answer: A
Solution :
Physical quantity (p) = Numerical value (n)\[\times \] Unit (u) If physical quantity remains constant then n u 1/u \ n1u1 = n2u2 .
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