Question

Two small spheres of radii r and 2r fall through a viscous liquid with the same constant speed. The viscous forces experienced by them are in the ratio …….. 

(a) 1 : 2

(b) 2 : 1 

(c) 1 : 4 

(d) 4 : 1

Answer 1

Correct answer is (a) 1 : 2