The stress-strain curves are drawn for two di | vedclass

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(A) In a stress-strain curve,the ultimate strength point represents the maximum stress a material can withstand. The fracture point is the point where

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brittle and ductile

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(A) In a stress-strain curve,the ultimate strength point represents the maximum stress a material can withstand. The fracture point is the point where the material breaks.For a brittle material,the material breaks soon after the elastic limit or ultimate strength point,meaning the fracture point is very close to the ultimate strength point.For a ductile material,the material undergoes significant plastic deformation after the ultimate strength point before it finally fractures,meaning the fracture point is far from the ultimate strength point.Since material $X$ has these points close together,it is brittle.Since material $Y$ has these points far apart,it is ductile.Therefore,$X$ and $Y$ are brittle and ductile,respectively.

The stress-strain curves are drawn for two different materials $X$ and $Y$. It is observed that the ultimate strength point and the fracture point are close to each other for material $X$ but are far apart for material $Y$. We can say that materials $X$ and $Y$ are likely to be (respectively)

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