When a beam of sunlight enters a room through a window, we can see tiny particles X suspended
Channel: Doubtnut
Date: 26/01/2020

When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner. (a) What could particles X be ? Name the gas (or mixture of gases) Y. (c ) What is the phenomenon exhibited by particles X known as ? (d) What is causing the movement of particles X ? (e) What conclusion does the existence of this phenomenon give us about the nature of matter ?