Class 11 NEET Physics Properties of Matter Questions

Question : 16 of 90

Marks: +1, -0

A The terminal velocity of a copper ball of radius 5‌mm falling through a tank of oil at room temperature is 10‌cm‌s−1. If the viscosity of oil at room temperature is 0.9‌kg‌m−1‌s−1, the viscous drag force is: