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8. mechanical properties of solids — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics8. mechanical properties of solids1 Mark
MCQ
A cylindrical wire of radius $1\,\, mm$, length $1 m$, Young’s modulus $= 2 × 10^{11} N/m^2$, poisson’s ratio $\mu = \pi /10$ is stretched by a force of $100 N$. Its radius will become
  • A
    $0.99998\,\, mm$
  • B
    $0.99999\,\, mm$
  • C
    $0.99997 \,\,mm$
  • ✓
    $0.99995 \,\,mm$
✓

Answer

Correct option: D.
$0.99995 \,\,mm$
d

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