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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 diagram shows a force-extension graph for a rubber band. Consider the following statements

$I.$ It will be easier to compress this rubber than expand it

$II.$ Rubber does not return to its original length after it is stretched

$III.$ The rubber band will get heated if it is stretched and released

Which of these can be deduced from the graph

  • ✓
    $III$ only
  • B
    $II$ and $III$
  • C
    $I$ and $III$
  • D
    $I$ only
✓

Answer

Correct option: A.
$III$ only
a
(a) Area of hysterisis loop gives the energy loss in the process of stretching and unstretching of rubber band and this loss will appear in the form of heating.

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