While determining the coefficient of viscosity of the given liquid, a spherical steel ball sinks by a distance h =0.9 ~m . The radius of the ball r = 3 10⁻³ ~m . The time taken by the ball to sink in three trails are tabulated as follows. array |l|l| Trial No. & Time taken by the ball to fall by h (in second) 1 . & 2.75 2 . & 2.65 3 . & 2.70 array The difference between the densities of the steel ball and the liquid