First slide

Different type of processes

Question

In an adiabatic expansion of air the volume increases by 5%. What is the percentage change in pressure?

Easy

A

7%
B

6%
C

4%
D

3%

Solution

${PV}^{γ} = constant \Rightarrow P \infty V^{- γ} \Rightarrow \frac{∆ P}{P} = - γ \frac{∆ V}{V} For air γ = \frac{7}{5}$

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