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Q.

The product of Young's modulus of the material of the wire with its cross-sectional area is equal to its length. Find the parameters representing x and y-axes of the curve as shown:

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a

Young's modulus and strain

b

stress and strain

c

load and increase in length

d

Yong's modulus and stress

answer is A.

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Detailed Solution

Y = (WA)(∆ll)  ⇒∆l = (lYA)W

Given, YA = l So, ∆lW = 1

Also from curve, its slope = tan 45° = 1

So, x and y axes represent W  and ∆l

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