Medium
$A$ body is moving in a low circular orbit about a planet of mass $M$ and radius $R$. The radius of the orbit can be taken to be $R$ itself. Then the ratio of the speed of this body in the orbit to the escape velocity from the planet is
- A$1$
- B$2$
- C$\frac{1}{\sqrt{2}}$
- D$\sqrt{2}$
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