Question

A lead shot of $1\text{mm}$ diameter falls through a long column of glycerine. The variation of its velocity $v$ with distance covered is represented by :

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

When a body falls through a viscous liquid, its velocity increases due to gravity but after some time its velocity becomes uniform because of viscous force becoming equal to the gravitational force. Viscous force itself is a variable force which increases as velocity increases, so curve (a) represents the correct alternative.