Question
The escape velocity of a body on a planet 'A' is 12 kms$-$1. The escape velocity of the body on another planet 'B', whose density is four times and radius is half of the planet 'A', is :
The escape velocity of a body on a planet 'A' is 12 kms$-$1. The escape velocity of the body on another planet 'B', whose density is four times and radius is half of the planet 'A', is :