Orbital velocity of earth's satellite near the surface is $7 \,km/s$. When the radius of the orbit is $4$ times than that of earth's radius, then orbital velocity in that orbit is ......... $km/sec$
Orbital velocity of earth's satellite near the surface is $7 \,km/s$. When the radius of the orbit is $4$ times than that of earth's radius, then orbital velocity in that orbit is ......... $km/sec$
$3.5$
$7$
$72$
$14$
Orbital velocity of earth's satellite near the surface is $7 \,km/s$. When the radius of the orbit is $4$ times than that of earth's radius, then orbital velocity in that orbit is ......... $km/sec$
$v \propto \frac{1}{{\sqrt r }}.$
If orbital radius becomes $4$ times then orbital velocity will become half.
i.e. $\frac{7}{2} = 3.5\;km/s$
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