Answer : The (C) 0.0000297 kg is not the same as 2.97 mg.
Explanation :
The conversion used for mass from milligram to centigram is:
\(1mg=10^{-1}cg\)
The conversion used for mass from milligram to gram is:
\(1mg=10^{-3}g\)
The conversion used for mass from milligram to kilogram is:
\(1mg=10^{-6}kg\)
As we are given that the mass 2.97 mg. Now we have to determine the mass in cg, g and kg.
Mass of 'cg' :
\(1mg=10^{-1}cg\)
\(2.97mg=\frac{2.97mg}{1mg}\times 10^{-1}cg=2.97\times 10^{-1}cg=0.297cg\)
Mass of 'g' :
\(1mg=10^{-3}g\)
\(2.97mg=\frac{2.97mg}{1mg}\times 10^{-3}g=2.97\times 10^{-3}g=0.00297g\)
Mass of 'kg' :
\(1mg=10^{-6}kg\)
\(2.97mg=\frac{2.97mg}{1mg}\times 10^{-6}kg=2.97\times 10^{-6}kg=0.00000297kg\)
Hence, from this we conclude that, 0.0000297 kg is not the same as 2.97 mg.
