Correct Answer - Option 2 : 1.0
Concept:
\(Longitudinal\space strain=\frac{Change\space in\space length}{Original\space length}\)
Calculation:
Given:
Initial lenght = L, Final lengh = 2L
\(Longitudinal\space strain=\frac{Change\space in\space length}{Original\space length}\)
Longitudinal strain \(=\frac{2L-L}{L}\)
Longitudinal strain = 1
