From the dimensional consideration, which of the following equation is correct
  • A$T = 2\pi \sqrt {\frac{{{R^3}}}{{GM}}} $
  • B$T = 2\pi \sqrt {\frac{{GM}}{{{R^3}}}} $
  • C$T = 2\pi \sqrt {\frac{{GM}}{{{R^2}}}} $
  • D$T = 2\pi \sqrt {\frac{{{R^2}}}{{GM}}} $
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