A cylindrical pressure vessel 2000 mm internal diameter and 20 mm wall thickness has an internal pressure of 1 N/mm² then the hoop stress developed is
A100 N/mm²
B1 N/mm²
C200 N/mm²
D50 N/mm²
A100 N/mm²
B1 N/mm²
C200 N/mm²
D50 N/mm²
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