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MHT CET 2025 (21 Apr, Shift 2) · Satellites - Orbital Velocity & Period

Satellites - Orbital Velocity & Period question from MHT CET 2025 (21 Apr, Shift 2)

Q10MHT CET 2025 · 21 APR · SHIFT 2Easy

Satellites - Orbital Velocity & Period

The radii of circular orbits of two satellites $A$ and $B$ of the earth are ' $4R$ ' and ' $R$ ' respectively, where $R$ is the radius of earth. If the speed of satellite $B$ is 6 V, then the speed of satellite $A$ will be

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Answer: (a)

Orbital speed $v \propto \frac{1}{\sqrt{r}}$ .
$\frac{v_A}{v_B} = \sqrt{\frac{R}{4R}} = \frac{1}{2}$
$v_A = \frac{6V}{2} = 3V$
So the answer is (a) 3 V.

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