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  • A gas is compressed adiabatically, which one of the following statement is NOT true.Option: 1 There is no change in the internal energy

A gas is compressed adiabatically, which one of the following statement is NOT true.

Option: 1

There is no change in the internal energy


Option: 2

The temperature of the gas increases.


Option: 3

The change in the internal energy is equal to the work done on the gas


Option: 4

There is no heat supplied to the system


Answers (1)

best_answer

In Adiabatic process, \Delta Q=0

If gas is compressed, then w (by gas) \neq 0

Therefore by 1st la

 \begin{aligned} & \Delta Q=\Delta \mathrm{u}+\mathrm{w} \\ & 0=\Delta \mathrm{u}+\mathrm{w} \\ & \Delta \mathrm{u}=-\mathrm{w} \neq 0 \end{aligned}

It implies in adiabatic compression, internal energy of gas changes.

 

Posted by

Pankaj Sanodiya

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