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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.
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