What arrangements for water can you see inside the fort? For example, wells, tanks, step wells.
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Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.
We can see any object, when light reflected by that object reaches our eyes. But in the dark room, no light is reflected by the object so we are unable...
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In towns and cities, generally, the bore wells have to be dug very deep to get water as compared to bore wells dug in villages.
(a) This is so because of excessive use of water which depletes the ground water. (b) Towns and cities have asphalted roads and vast areas of soil are concreted. As a...
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You are on a mountain. How do you feel there? What can you see? What do you feel like doing there?
I feel very excited to climb up on a mountain. I can see high mountains all around. In between these are deep valleys. There are also many trees all around...
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How may gates can you see on the outer walls of the fort?
There are nine gates on the outer walls of the fort.
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Do you now get some idea about how the tanks could have been filled by lifting water from the wells?
Yes, the tanks could have been filled up by lifting water from the wells using this technique.
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Look there! See finely those craftsman are carving the stones using a chisel and hammer? Can you see the stone dust in the air?
No, this stone dust would not be causing any harm to them as they have wrapped a cloth around their nose and mouth.
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See how the earth is looking. Can you see the surface of the moon? Do you have some questions after looking at this picture?
The earth is looking spherical in shape. Yes, I can see the surface of the moon. The following questions arise in my mind after looking at this picture: (i) Who look...
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What are the toilet arrangements in your house? Where is the toilet? Inside the house or outside? Who cleans the toilet?
In our house there is provision of a modern and concert toilet which is located inside the house. The toilet has a flush system. It has a small water tank...
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State the principle of working of a transformer. Can a transformer be used to step up or step down a d.c. voltage?
Working of a transformer is based on the principle of mutual induction. Transformer cannot step up or step down a dc voltage. Reason: No change in magnetic flux. Explanation: When dc voltage...
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Water can be lifted into the water tanks at the top of the house with the help of a pump. Then why is not considered to be spontaneous?
A spontaneous process should continue taking place by itself after initiation . But this is not so in the given case because water will go up so long as the...
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