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Can We Define the Temperature of (A) Vacuum, (B) a Single Molecule? - Physics

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प्रश्न

Can we define the temperature of (a) vacuum, (b) a single molecule?

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उत्तर

(a) Temperature is defined as the average kinetic energy of he partciles. In a vacuum, devoid of any electromagnetic fields and molecules or entities, the temperature cannot be defined as there are no molecules or atoms or entities. 

(b) No, we cannot define temperature of a single molecule. Since temperature is defined as the average kinetic energy of the particles, it is defined only statistically for a large collection of molecules. 

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Interpretation of Temperature in Kinetic Theory
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अध्याय 2: Kinetic Theory of Gases - Short Answers [पृष्ठ ३२]

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एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 2 Kinetic Theory of Gases
Short Answers | Q 4 | पृष्ठ ३२

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