The ratio of the acceleration due to gra...

The ratio of the acceleration due to gravity on two planets `P_1` and `P_2` is `k_1. The ratio of their respective radii is `k_2`. The ratio of their respective escape velocities is

`sqrt(k_1 k_2)`

`sqrt(2k_1 k_2)`

`sqrt(k_1 /k_2)`

`sqrt(k_2/ k_1)`

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