when an incense stick is lighted in one corner of a room its fragrance spread in the whole room quickly . Which characteristics of the particle is illustrated by this observation
(a) When an incense stick (agarbatti ) is lighted in one corner of a room, its fragracne quickly spreads in the entire room. Name the process involved in this.
(b) A girl is cooking some food in the kitchen, The smell of food being cooked soon reaches her brother's room, Explain how the smell could have reached her brother's room.