The escape velocity for a planet is upsilon_e.A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. When the body reaches the centre of the planet , its speed will be

The escape velocity for a planet is upsilon_e.A tunnel is dug along a

1.	The escape velocity for a planet is upsilon_e.A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. When the body reaches the centre of the planet , its speed will be
Answer» `upsilon_e` `upsilon_e/sqrt2` `upsilon_e/2` zero Answer :B