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Friction — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceFriction1 Mark
MCQ
When does a body have zero force of friction?
  • ✓
    When no force is applied on a body at rest.
  • B
    When a large force is applied on a body.
  • C
    When a body is rolling on the surface.
  • D
    When a body is sliding on the surface.
✓

Answer

Correct option: A.
When no force is applied on a body at rest.
Friction is the relative motion between two surfaces in contact. So, a body has zero force of friction when it is at rest, i.e. when no force is applied on it.

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