Difficult
The distances of two planets $A$ and $B$ from the sun are $r_A$ and $r_B$ respectively, such that $r_B = 100 r_A$. The ratio of the orbital speed of planet $A$ to that of planet $B$ is (both planets are revolving around the sun in circular orbits).
- A$1/\sqrt{10}$
- B$\sqrt{10}$
- C$10$
- D$10\sqrt{10}$
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