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Mechanical Properties of Solids — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsMechanical Properties of Solids1 Mark
MCQ
The potential energy $U$ between two molecules as a function of the distance $r$ between them has been shown in the adjoining figure. The two molecules are:
  • A
    Attracted when $r$ lies between $A$ and $B$ and repelled when $r$ lies between $B$ and $C.$
  • ✓
    Attracted when $r$ lies between $B$ and $C$ and repelled when $r$ lies between $A$ and $B.$
  • C
    Attracted when they reach $B.$
  • D
    Repelled when they reach $B.$
✓

Answer

Correct option: B.
Attracted when $r$ lies between $B$ and $C$ and repelled when $r$ lies between $A$ and $B.$

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