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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
Draw a neat labelled diagram of a laboratory thermometer.
Explain the construction of a calorimeter. Draw the necessary figure.
What is a bimetallic strip?
Where am I?
The isotherm 0°C runs in my surroundings.
The dimensions of a substance are increased if the temperature of the substance is decreased.
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.
Thermal energy always flows from a system at higher temperature to a system at lower temperature.
When we cool the object the temperature of the object will be increased.
