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प्रश्न
Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.
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उत्तर
We know that we need to supply about 340 joule of heat per g, to convert ice at 0°C, into water at 0°C. It follows that that ice-cream, at 0°C, will draw more heat (about 340 joule more per gram) from burbody than water at 0°C. It, therefore, feels colder than water at 0°C.
संबंधित प्रश्न
What do you understand by the following statements:
The specific heat capacity of lead is 130 Jkg-1K-1.
Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.
In Regnault's apparatus for measuring specific heat capacity of a solid, there is an inlet and an outlet in the steam chamber. The inlet is near the top and the outlet is near the bottom. Why is it better than the opposite choice where the inlet is near the bottom and the outlet is near the top?
The ratio of specific heat capacity to molar heat capacity of a body _____________ .
The substances like water which have ........... Heat capacity warm up more slowly than substances like iron which have .......... heat capacity.
A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as heat reservoir to keep juice bottles without freezing?
What are the factors on which the quantity of heat given to a body depends?
How much heat energy is necessary to raise the temperature of 5 kg of water from 20°C to 100°C?
The molar specific heats of an ideal gas at constant pressure and constant volume are denoted by Cp and Cv respectively. If `gamma = "C"_"p"/"C"_"v"` and R is the universal gas constant, then Cp is equal to ______.
