First slide
Fundamentals of thermodynamics

Which one of the following equations does not correctly represent the first law of thermodynamics for the given process 


In adiabatic process. 110 heat is allowed to enter or leave the system, i.e. q = 0 Substituting this value in first law of thermodynamics.

ΔE=q+W we get ΔE=W

In adiabatic expansion, work is done by the system on the surroundings hence W is negative. Accordingly , E is also negative. i.e. internal energy decreases. In adiabatic compression. W is positive, E is also positive

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