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Question

Which of these statements is/are true about internal energy (Eint) of a system of gas?


A

Eint always increases as pressure increases

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B

Eint always decreases as temperature decreases

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C

Eint is proportional to volume

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D

Eint is proportional to the kinetic energy of the atoms in the system

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Solution

The correct option is D

Eint is proportional to the kinetic energy of the atoms in the system


Eint is defined as
Eint=(32)kT×N
Eint is always going to increase when temperature is going to rise. The temperature of any system is the average kinetic energy of the atoms in the system.


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