Physics · Mechanical Properties of Solids
The load (W) vs elongation (Δl) graph for a wire of length 1 m and cross-sectional area 1 mm2 is a straight line passing through the origin with points (0,0) and (Δl = 2 × 10-4 m, W = 4 × 103 N). The Young's modulus of the material of the wire is:
- 14 × 1010 N m-2
- 210 × 1010 N m-2
- 32 × 1010 N m-2✓
- 420 × 1010 N m-2
Correct answer
2 × 1010 N m-2
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