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#10 | Stress, Strain Curve

(Physics) > Mechanical Properties of Solids

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Related Practice Questions :

Three wires A,B,C made of the same material and radius have different lengths. The graphs in the figure show the elongation-load variation. The longest wire is

1. A

2. B

3. C

4. All

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The adjacent graph shows the extension $\left(\u2206l\right)$ of a wire of length 1*m* 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 ${10}^{-6}{m}^{2}$ calculate the young’s modulus of the material of the wire

(a) $2\times {10}^{11}N/{m}^{2}$

(b) $2\times {10}^{-11}N/{m}^{2}$

(c) $3\times {10}^{-12}N/{m}^{2}$

(d) $2\times {10}^{-13}N/{m}^{2}$

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The diagram shows stress *v/s* strain curve for the materials *A* and *B*. From the curves we infer that

(a) *A* is brittle but *B* is ductile

(b) *A* is ductile and *B* is brittle

(c) Both *A* and *B* are ductile

(d) Both *A* and *B* are brittle

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The stress versus strain graphs for wires of two materials *A* and *B* are as shown in the figure. If ${Y}_{A}$ and ${Y}_{B}$ are the Young ‘s modulii of the materials, then

(a) ${Y}_{B}=2{Y}_{A}$

(b) ${Y}_{A}={Y}_{B}$

(c) ${Y}_{B}=3{Y}_{A}$

(d) ${Y}_{A}=3{Y}_{B}$

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