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An ideal gas in a thermally insulated ve...

An ideal gas in a thermally insulated vessel at internal pressure `=P_(1)`, volume `=V_(1)` and absolute temperature `=T_(1)` expands irreversibly against zero external pressure, as shown in the diagram. The final internal pressure, volume and absolute temperature of the gas are `P_(2), V_(2)` and `T_(2)` respectively. For this expansion.

A

q=0

B

`T_(2) = T_(1)`

C

`P_(2)V_(2) = P_(1)V_(1)`

D

`P_(2)V_(2)^(Y) = P_(1)V_(1)^(Y)`

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Adiabacit expansion against zero external pressure is isothermal process.
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