Question

The ratio of radii of two spherical drop is 1:2.What is the ratio of terminal velocity of these drops?

Answer 1

Given - Ratio of radii

Find - Terminal velocity

Solution - The ratio of terminal velocity of given drops is 1/4.

The terminal velocity of drops is directly proportional to the square of the radius of spherical drops.

So, representing this as a mathematical expression we get -

V1/V2 = (r1/r2)²

Keeping the values in the formula to find the ratio of terminal velocity of drops

V1/V2 = (1/2)²

Taking square of the radii

V1/V2 = 1/4

So, the ratio of terminal velocity of drops is 1/4