1.

The critical pressure ratio (p₂/p₁) is given by

A. p₂/p₁) = [2/(n - 1)] n/(n + 1)
B. p₂/p₁) = [2/(n + 1)] n/(n-1)
C. p₂/p₁) = [(n - 1)/2] n + (1/n)
D. p₂/p₁) = [(n + 1)/2] n - (1/n)
Answer» C. p₂/p₁) = [(n - 1)/2] n + (1/n)


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