A spherical ball falls through viscous medium with terminal velocity `v`. If this ball is replaced by another ball of the same mass but half the radius, then the terminal velocity will be (neglect the effect of buoyancy.)

A metal ball falls through water with terminal velocity 20 ms^(-1) . When the ball is allowed to fall through vacuum, then

A metal ball falls through water with terminal velocity 20 ms^(-1) . When the ball is allowed to fall through vacuum, then

A small spherical ball falling through a viscous medium of negligible density has terminal velocity v. Another ball of the same mass but of radius twice that of the earlier falling through the same viscous medium will have terminal velocity

A small spherical ball falling through a viscous medium of negligible density has terminal velocity v. Another ball of the same mass but of radius twice that of the earlier falling through the same viscous medium will have terminal velocity

A metallic sphere of mass M falls through glycerine with a terminal velocity v. If we drop a ball of mass 8M of same metal into a column of glycerine, the terminal velocity of ball will be