question_answer

Circumferential stress in a cylindrical steel boiler shell under internal pressure is 80 MPa, Young's modulus of elasticity and Poisson's ratio are respectively \[2\times {{10}^{5}}\] MPa and 0.28. The magnitude of circumferential strain in the boiler shell will be

A) \[3.44\times {{10}^{-\,4}}\]                  

B) \[3.84\times {{10}^{-\,4}}\]

C) \[4\times {{10}^{-\,4}}\]                      

D) \[4.56\times {{10}^{-\,4}}\]