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An ideal gas is initially at P1, V1 is expanded to P2, V2 and then compressed adiabatically to the same volume V1 and pressure P3. If W is the net work done by the gas in complete process which of the following is true
  • a)
     W > 0 ; P3 > P1
  • b)
    W < 0 ; P3 > P1
  • c)
    W > 0 ; P3 < P1
  • d)
    W < 0 ; P3 < P1
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
An ideal gas is initially at P1, V1 is expanded to P2, V2 and then com...
In the first process W is + ve as ΔV is positive, in the second process W is – ve as ΔV is – ve and area under the curve of second process is more
∴ Net Work  < 0 and also P3 > P1.
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Most Upvoted Answer
An ideal gas is initially at P1, V1 is expanded to P2, V2 and then com...
A) W > 0
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An ideal gas is initially at P1, V1 is expanded to P2, V2 and then compressed adiabatically to the same volume V1 and pressure P3. If W is the net work done by the gas in complete process which of the following is truea)W > 0 ; P3 > P1b)W < 0 ; P3 > P1c)W > 0 ; P3 < P1d)W < 0 ; P3 < P1Correct answer is option 'B'. Can you explain this answer?
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