Base on the StressStrain curves below identify which curve r

Base on the Stress-Strain curves below identify which curve represents a strong polymer and which represents a polymer that is consider tough and explain.

Solution

curve with largest area on stress strain diagram show material toughness .it means te material having linear curce on stress strain diagram is less tougher than material having largeest area curve. aswe can see for a single stress material can withstand upto a large strain which show that it has high toughness