jee-main 2020 Q7

jee-main · India · session2_04sep_shift2 Not Maths
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:
(1) $\frac { 1 } { \sqrt { 2 } }$
(2) 2
(3) 1
(4) $\sqrt { 2 }$ 
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:\\
(1) $\frac { 1 } { \sqrt { 2 } }$\\
(2) 2\\
(3) 1\\
(4) $\sqrt { 2 }$
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