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प्रश्न
The following figure shows a rectangular box with two tubes P and Q at the top. A burning candle R is placed under the tube P. The candle burns brightly.
Explain:
(i) How is the air in the box circulating?
(ii) What will happen if the opening Q is closed?
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उत्तर
(i) Air is entering into the box from tube Q and as air reaches near the candle its temperature increase and air become lighter and leaves out from tube P.
(ii) If opening Q is closed then circulation of air stops and there is no way for air to enter. Air inside the box will leave out from tube P and after some time candle stops because for burning it requires air which is not circulating in the box now.
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संबंधित प्रश्न
Define temperature and write its S.I. unit.
S.I. unit of temperature is :
Who am I?
I make things hot or cold.
Name a substance which is an insulator of heat.
Convert the following temperature into Fahrenheit scale:
-400C
Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?
Kelvin is written as K also known as absolute scale as it starts from absolute zero temperature.
