📊 Fluid Mechanics and Hydraulic Machines
Q. Newton's law of viscosity states that shear stress is directly proportional to
  • (A) Velocity gradient
  • (B) Tendency to slide along steep slopes
  • (C) Need for special coating against the corrosive action of salts present in soil
  • (D) No expansion joints needed
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✅ Correct Answer: (D) No expansion joints needed

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