Finding Viscosity of Liquid

1. On increasing the radius of the steel ball to double its value the terminal velocity of the ball become box:
2. On increasing density of material of the falling ball its terminal velocity:
3. On increasing density of the liquid in which ball is falling (keeping other parameters same), the terminal velocity of the body will
4. On increasing viscosity of the liquid in which ball is falling (keeping other parameters same), the terminal velocity of the body will: