A) 40
B) 640
C) 16
D) 410
Correct Answer: A
Solution :
[a] \[\left[ Density \right]=\left[ M{{L}^{-3}} \right]\] |
\[128\,[kg]{{[m]}^{-3}}\,=\,n\frac{\left[ 50\,kg \right]}{1000}\,{{\left[ \frac{1}{4}m \right]}^{-3}}\] |
\[n=40\] |
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