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A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm2. If the permissible tensile stress in the metal is 20 N/mm2, then the thickness of the metal required for making the pipe will be. | |
A. | 5 mm [Wrong Answer] |
B. | 10 mm [Wrong Answer] |
C. | 15 mm [Wrong Answer] |
D. | 25 mm [Correct Answer] |