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प्रश्न
Which among the following equations represents the first law of thermodynamics under isobaric conditions?
विकल्प
ΔU = qp − Pex. ΔV
qv = ΔU
ΔU = W
W = −q
MCQ
उत्तर
ΔU = qp − Pex. ΔV
Explanation:
ΔU = q + W
According to the first law of thermodynamics
= q + (−Pex·ΔV) ....(∵ W = −Pex.ΔV)
ΔU = qp − Pex. ΔV
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First Law of Thermodynamics
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