Answer :

(a) From the graphs given in the question, we note that for a given strain, stress for A is more than that of B.

Hence, young’s modulus, which is defined as the ratio of tensile stress to tensile strain, is greater for A than that of B.

(b) Strength of a material is measured by the amount of stress required to cause fracture.

On observing the graphs mentioned in the question, we can see that material A is stronger than B since the stress curve in Graph for A fails at a larger distance compared to the curve in graph for B.

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