📊 Machine Design
Q. 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
  • (B) 10 mm
  • (C) 15 mm
  • (D) 25 mm
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✅ Correct Answer: (D) 25 mm

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