H C Verma Solutions for Chapter: Some Mechanical Properties of Matter, Exercise 2: OBJECTIVE I

A $20 \mathrm{cm}$ long capillary tube is dipped in water. The water rises up to $8 \mathrm{cm}$. If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be,

Viscosity is a property of

The force of viscosity is

The viscous force acting between the two layers of a liquid is given by,

$\frac{F}{A}=-\mathrm{\eta }\frac{\mathrm{d}v}{\mathrm{d}z}$

This $\frac{F}{A}$ may be called

A raindrop falls near the surface of the Earth with almost uniform velocity because

A piece of wood is taken deep inside a long column of water and released. It will move up

A solid sphere falls with a terminal velocity of $20 \mathrm{m} {\mathrm{s}}^{-1}$ in the air. If it is allowed to fall in a vacuum,

A spherical ball is dropped in a long column of a viscous liquid. The speed of the ball as a function of time may be best represented by graph