List of top Physics Questions on Escape Speed asked in KEAM

The escape velocities of two planets $A$ and $B$ are in the ratio $2 : 3$. If the ratio of their radii is $3 : 4$, then the ratio of acceleration due to gravity at the surface of the planet $A$ to that at the surface of the planet $B$ is

The ratio of the escape velocity to the orbital velocity of the earth is ________.