Which of these statements is-are true about internal energy -Eint- of a system of gas-always increases as pressure increases-always decreases as temperature decreases- is proportional to volume- is proportional to the kinetic energy of the atoms in the system-

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Byju's Answer

Standard XII

Physics

The State of a Gas

Which of thes...

Question

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

always increases as pressure increases

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always decreases as temperature decreases

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is proportional to volume

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

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Solution

The correct options are
B
always decreases as temperature decreases

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

$E_{i n t}$ is defined as
$E_{i n t} = (\frac{3}{2}) k T \times N$
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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