Explain the following :When an incense stick is lighted in the corner of a room, its fragrance spreads quickly in the entire room.
When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation?
Explain how, the smell of food being cooked in the kitchen reaches us even from a considerable distance.
A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.
Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room. Explain.
The breadth of a room is twice its height, one half of its length and the volume of the room is512512cu. dm. Find its dimensions.
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
Paheli does not have a night lamp in her room. She covered the bulb of her room with a towel in the night to get dim light. Has she taken the right step? Give one reason to justify your answer.
What is the room temperature? Explain in short.
Why does it take some time to see objects in a dim room when you enter the room from bright sunshine outside?
