Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used...

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Hoop (circumferential) stress induced in a thin walled 'Horton Sphere' used for the storage of liquid ammonia under pressure is

A. $$\frac{{{\text{pD}}}}{{2{\text{t}}}}$$

B. $$\frac{{{\text{pD}}}}{{4{\text{t}}}}$$

C. $$\frac{{{\text{pD}}}}{{3{\text{t}}}}$$

D. $$\frac{{{\text{pD}}}}{{6{\text{t}}}}$$

Answer: Option A

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