Correct option is A
1. Curve E: Brittle Material
Features:
Linear elastic region followed by sudden fracture (no plastic deformation).
High stiffness (steep slope), low ductility.
Example:
Cast iron, ceramics, or glass.
2. Curve F: Ductile Material with Yield Point
Features:
Distinct yield point (drop in stress after elastic limit).
Significant plastic deformation before failure.
Example:
Mild steel (low-carbon steel).
3. Curve G: Elastomeric/Polymer Material
Features:
Non-linear elasticity (long, gradual curve).
High strain capacity, low stiffness (shallow slope).
Example:
Rubber or thermoplastic polymers.
