The stress-strain graphs for materials A and B are shown in Fig. 9.12.The graphs are drawn to the same scale: Which of the two is the stronger material?
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Hello friend !!
Well here we know that Stress is =Force/Area
Strain=Change in dimension/Original dimension
In figure one the given material can undergo a large amount of strain (which can done by applying stress) and thus the breaking point comes after undergoing a large of change in length as compared to that of figure 2 .
Hence figure 1 corresponds to a stronger material !
Hope this helps
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