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प्रश्न
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.
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उत्तर
Smoke is entering into the box from tube Pandas smoke reaches near the candle its temperature increase and smoke become lighter and leaves out from tube Q.
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संबंधित प्रश्न
Fill in the blank
A person is said to have fever if his body temperature is more than _________
Write down the body temperature of a healthy person.
Name the one common unit of temperature. Write their symbols also.
Explain the following
Water pipes in colder countries often burst in winter.
Explain, why are the taps left dripping in sub-zero temperatures during winter?
Name the substance which contracts when heated from 00C to 40C.
Convert the following temperature into Celsius scale:
104oF
Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal.
Reason (R): To convert a temperature on the Celsius scale we have to add 273 to the given temperature.
While a substance is undergoing a change of state, the temperature of the body remains the same.
