Which of the following equations does not correctly represent the first law of thermodynamcis?A. isothermal process : `q=-w`B. cyclic process : `q=-w`C. isocharic process : `DeltaE=q`D. adiabatic process : `DeltaE=-w`

Which of the following equations does not correctly represent the firs

1.	Which of the following equations does not correctly represent the first law of thermodynamcis?A. isothermal process : `q=-w`B. cyclic process : `q=-w`C. isocharic process : `DeltaE=q`D. adiabatic process : `DeltaE=-w`
Answer» Correct Answer - D According to `1st` law of thermodynamics, `DeltaE=q+w` For isothermal process, `DeltaE=0`. Hence `q=-w` For cyclic process, `DeltaE=0`. Hence `q=-w` For isobaric process, `DeltaV=0` Hence `DeltaE=q(w=PDeltaV=0)` For adiabatic process, `q=0`. Hence, `DeltaE=w` For expansion in vacuum, `w=0` Hence `DeltaE=q` `:. (D)` is incorrect

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Which of the following equations does not correctly represent the first law of thermodynamcis?A. isothermal process : `q=-w`B. cyclic process : `q=-w`C. isocharic process : `DeltaE=q`D. adiabatic process : `DeltaE=-w`

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