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Question

A sample of gas with γ=1.5 is taken through an adiabiatic process in which the volume is compressed from 1200 cm3 to 300 cm3. if the initial pressure is 200 kPa. The absolute value of the workdone by the gas in the process
J.

A
480.00
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B
480
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C
480.0
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Solution

For an adiabatic process between two thermodynamic states,
P1Vγ1=P2Vγ2
Here P1=200 kPa,V1=1200 cm3,V2=300 cm3,γ=1.5

P2=200(4)1.5=1600 kPa

Work done by the gas in this adiabatic process is P1V1P2V2γ1=1600(300)1200(200)1.51=480×106×106 J=480 J

Ans: 480,480.0,480.00

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