Correct Answer - Option 4 : 545.0
Given,
Pressure head = 100 m
So, P = ρg H
P = 103 × 9.81 × 100 ........(ρ = 103 kg / m3, g = 9.81)
P = 981000 N/m2;
Tensile stress in pipe wall = circumferential stress in pipe wall
So, tensile stress in pipe wall \(= \frac {Pd}{2t}\)
\(= \frac {981000 × 10}{2 × 9 × 10^{-3}}\)
= 545 × 106 N/m2
= 545 MPa