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प्रश्न
Which is more, a calorie or a joule?
उत्तर
Calorie. Because 1 calorie = 4.2 joules.
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संबंधित प्रश्न
A bridge is made from 20 m long iron rods. At temperature 18∘C, the distance between two rods in 0.4 cm. Up to what temperature will the bridge be in good shape?
Name two substances which expand on heating.
At 0°C and 760 mm Hg pressure, a gas occupies a volume of 10Q cm3. The Kelvin temperature (Absolute temperature) of the gas is increased by one-fifth while the pressure is increased one and a half times. Calculate the final volume of the gas. [80 cc.]
Do all substances expand on heating? Give examples.
Convert the following temperature into Fahrenheit scale:
600C
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Reason: Energy is the capacity to do work.
Give reasons why –
we wear woolen clothes in winter
