Question

3. 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?
b) 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?​

Answer 1

Answer:

a) the X particle is particles of dust and other impurities present in air.

b) the Y is a mixture of gas i.e, air

c) the phenomenon exhibited is called Tyndall effect.

d) the size of particles of X is cause of this movement.

e) the particle's size is  10-100 μ