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संबंधित प्रश्न
What is the difference between heat and temperature? What are their units?
Name two substances which contract on heating.
Why is a ventilator provided in a room?
The hot metal ball is suspended from a string in a metal box as shown in the following figure
(i) What are the ways in which the ball loses heat
(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.
Out of metals, liquids, and gases:
Which one is worst conductor of heat?
Explain the following:
It is cool in the shade, when it is hot outside.
The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.
Where am I?
The mean annual temperature around me is 10°C.
