369976
The diagram shows stress vs strain curve for the materials \(A\) and \(B\). From the curves
1 \(A\) is ductile and \(B\) is brittle
2 \(A\) is brittle and \(B\) is ductile
3 Both \(A\) and \(B\) are brittle
4 Both \(A\) and \(B\) are ductile
Explanation:
In ductile materials the plastic region EC is large and hence the materials can be easily changed into different shapes. Whereas for brittle materials the plastic region between EC is small and they will break soon after the elastic limit is crossed. Graph B represents brittle material and graph A represents ductile material
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369977
Assertion : The stress-strain behaviour varies from material to material. Reason : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Stress-strain curves differ from one material to another and provide insight into how a specific material responds to increasing loads. Rubber is an example of an elastomer. The given are two separate facts. Reason is about one material viz rubber only. Assertion is general for different materials. So correct option is (2).
369976
The diagram shows stress vs strain curve for the materials \(A\) and \(B\). From the curves
1 \(A\) is ductile and \(B\) is brittle
2 \(A\) is brittle and \(B\) is ductile
3 Both \(A\) and \(B\) are brittle
4 Both \(A\) and \(B\) are ductile
Explanation:
In ductile materials the plastic region EC is large and hence the materials can be easily changed into different shapes. Whereas for brittle materials the plastic region between EC is small and they will break soon after the elastic limit is crossed. Graph B represents brittle material and graph A represents ductile material
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369977
Assertion : The stress-strain behaviour varies from material to material. Reason : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Stress-strain curves differ from one material to another and provide insight into how a specific material responds to increasing loads. Rubber is an example of an elastomer. The given are two separate facts. Reason is about one material viz rubber only. Assertion is general for different materials. So correct option is (2).
