Question

Why do solids regain their original shape and size after removing a deforming force (within certain limits)?

Options

• Gravity pulls them back into shape

• The deforming force was weak

• Internal restoring forces (interatomic forces) pull constituents back

• The solid becomes liquid and then solidifies again

Answer 1

Internal restoring forces (interatomic forces) pull constituents back

Explanation:

The restoring forces developed during deformation act to return the displaced molecules to their original equilibrium positions. This process has limits,excessive forces can cause permanent deformation.