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Define Calorie . What is the relation be...

Define Calorie . What is the relation between calorie and mechanical equivalent of heat ?

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Calorie : The amount of heat required to rise the temperature of 1g of water by `1^(@)C` is called calorie.
Relation between calorie and Joule , 1 calorie = 4.2 J.
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VGS PUBLICATION-BRILLIANT-THERMODYNAMICS-VERY SHORT ANSWER QUESTIONS
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  17. How much will be the internal energy change in adiabatic process

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