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9. The adjacent graph shows the extension

The adjacent graph shows the extension (Δl) of a wire of length 1m suspended from the top of a roof at one end with a load W connected to the other end. If the cross sectional area of the wire is 10-6 m2  calculate the young’s modulus of the material of the wire

(a) 2×1011 N/m2

(b) 2×10–11 N/m2

(c) 3×10–12 N/m2

(d) 2×10–13 N/m2

Answer-a

(14)

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