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Elasticity — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsElasticity1 Mark
MCQ
The force constant of a wire does not depend on
  • A
    Nature of the material
  • B
    Radius of the wire
  • C
    Length of the wire
  • ✓
    None of the above
✓

Answer

Correct option: D.
None of the above
(d) $K=\frac{Y A}{L}=\frac{Y \times \pi r^2}{L} \Rightarrow K \propto \frac{Y r^2}{L}$i.e. force constant of a wire depends on young's modules (nature of the material), radius of the wire and length of the wire.

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