Answer:
The correct answer is option 'b':0.25
Explanation:
By definition of strain we have
[tex]\epsilon =\frac{L_f-L_o}{L_o}[/tex]
where
[tex]\epsilon [/tex] is the strain
[tex]L_o[/tex] is the original length of specimen
[tex]L_f[/tex] is the elongated length of specimen
Applying the given values we get
[tex]\epsilon =\frac{12.5''-10''}{10''}=0.25[/tex]