11th Class
Physics
Sample Paper
Physics Sample Paper-5
question_answer
A metal ball \[{{B}_{1}}\] \[\left( density\text{ }3.2\text{ }g\text{ }c{{m}^{-3}} \right)\] is dropped in water while another metal ball \[{{B}_{2}}\] (density 6.0 g\[c{{m}^{-3}}\]) is dropped in a liquid of density\[1.6\,\,g\,\,c{{m}^{-3}}\]. If both the balls have the same diameter and attain the same terminal velocity, the ratio of viscosity of water to that of the liquid is