The stress-strain curves for brass, steel and rubber are shown in the figure. The lines $A, B$ and $C$ are for
Medium
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(c) $Y = \tan \theta $. According to figure ${\theta _A} > {\theta _B} > {\theta _C}$
i.e. $\tan {\theta _A} > \tan {\theta _B} > \tan {\theta _C}$
or ${Y_A} > {Y_B} > {Y_C}$
$ A, B,$ and $C$ graph are for steel, brass and rubber respectively.
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