If $G$ is universal gravitation constant and $g$ is acceleration due to gravity, then dimensions of $\frac{G}{g}$ will be ...................
  • A$\left[ M ^{-1} L ^2\right]$
  • B$\left[ M ^{-1} L \right]$
  • C$\left[ M ^{-2} L \right]$
  • D$\left[M^{-1} L^{-2}\right]$
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