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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
The elasticity of invar
  • A
    Increases with temperature rise
  • B
    Decreases with temperature rise
  • ✓
    Does not depend on temperature
  • D
    None of the above
✓

Answer

Correct option: C.
Does not depend on temperature
c
Invar is a $Fe - Ni$ alloy stul which does not experience any thermal expansion in the extremely low tempratur environment. Or the above room temprature. environment.

since, temprature effect on it is very less, it is tough and ductile and hence its elasticity rimains constant when temprature is changed.

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