13717. When a thin cvlindrical shell is subjected to an internal pressure, the volumetric strain is (where ε1 = Hoop strain, and ε2 = Longitudinal strain)

2ε1 – ε2
2ε1 + ε2
2ε2 – ε1
2ε2 + ε1
✅ The correct answer is option B.

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