A planet is revolving around the Sun in ...

A planet is revolving around the Sun in an elliptical orbit. Its closest distance from the Sun is `r` and farthest distance is `R`. If the orbital velocity of the planet closest to the Sun is `v`, then what is the velocity at the farthest point?

`v_1 r_2/ r_1`

`v_1 r_1/ r_2`

`v_1 (r_1)^2/ (r_2)^2`

`v_1 (r_2)^2/(r_1)^2

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