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प्रश्न
Give a scientific reason for the following:
It is better to use thin blankets to keep the body warm rather than using a single blanket of thickness equal to their combined thickness.
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उत्तर
It is better to use two thin blankets to keep the body warm rather than using a single blanket of equal thickness because in between the two thin blankets there is more air trapped than in the single blanket of equal thickness so using two thin blankets better heat insulation is provided to the body from the surroundings and keep us warm
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संबंधित प्रश्न
Fill in the blank
The S.I. unit of temperature is ________.
Name two scales of temperature. How are they interrelated?
How is the size of a degree defined on a Fahrenheit scale?
What must be the temperature in Fahrenheit so that it will be twice its value in Celsius?
Name two substances which contract on heating.
Convert 20°C into Fahrenheit scale.0
Convert 80 K temperatures on the Celsius scale.
Analogy
Ice cube : 0o C :: Boiling water :______
Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
Define absolute zero.
