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Is Heat a Conserved Quantity? - Physics

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प्रश्न

Is heat a conserved quantity?

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उत्तर

Yes, heat is a conserved quantity. Suppose two bodies A and B are at different temperatures, wherein A is higher and B is lower. When they are brought in contact, the heat given by A is equal to the heat gained by B. Thus, the heat is conserved in the system.

Here, we have ignored the heat exchanged with the surroundings. If we consider the surroundings, the heat of the system will be conserved.

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अध्याय 3: Calorimetry - Short Answers [पृष्ठ ४६]

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एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 3 Calorimetry
Short Answers | Q 1 | पृष्ठ ४६

संबंधित प्रश्न

The dimensions of emissive power are ______.


The kinetic energy per molecule of a gs at temperature T is ________.

(a) `(3/2)RT`

(b) `(3/2)K_BT`

(c) `(2/3) RT`

(d) `(3/2)("RT"/M)`


Can the bulb of a thermometer be made of an adiabatic wall?


The length of a brass rod is found to be less on a hot summer day than on a cold winter day as measured by the same aluminium scale. Can we conclude that brass shrinks on heating?


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Which of the curves in the following figure represents the relation between Celsius and Fahrenheit temperatures?


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The mechanical equivalent of heat ____________ .


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(a) must increase

(b) may increase

(c) may remain constant

(d) may decrease


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Answer the following question.

Clearly, state the difference between heat and temperature?


Temperature and Heat are ______


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Which formula gives the average kinetic energy per molecule of an ideal gas?


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