The figure shows stress-strain graphs (drawn to scale) for two materials A and B. From the graphs, the ratio of the Young's modulus of A to that of B is:

37:53
53:37
1:1
37:90

Correct answer: 53:37

Solution

Young's modulus is the slope of the stress-strain line; the steeper line (A) gives the larger modulus, so the ratio Y_A: Y_B is 53:37.

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