The first law of thermodynamics can be expressed mathematically as:
Correct answer: A. Δθ = Δu + Δw
- A. Δθ = Δu + Δw
- B. Δθ = Δu
- C. Δθ = Δw
- D. None
Explanation
First law of thermodynamics states " energy can neither be created nor destroyed, it can only be altered/changed into different forms". Δθ= Δu + Δw is one of the mathematical expression for first law of thermodynamics which explains that heat supplied to the system(Δθ) is equal to change in internal energy of the system(Δu) plus work done by the system on the surrounding(Δw).
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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