#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 l 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 10-6m2 calculate the young’s modulus of the material of the wire

(a) 2×1011N/m2

(b) 2×10-11N/m2

(c) 3×10-12N/m2

(d) 2×10-13N/m2

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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 YA and YB are the Young ‘s modulii of the materials, then

(a) YB=2YA

(b) YA=YB

(c) YB=3YA

(d) YA=3YB

 

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