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Friction — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceFriction1 Mark
MCQ
The sides of matchboxes are made rough so as to.
  • A
    Hold them easily.
  • B
    Reduce their cost.
  • C
    Make them strong.
  • ✓
    Increase their friction.
✓

Answer

Correct option: D.
Increase their friction.
The roughness over a surface increases its friction. Sparks are produced when a matchstick is rubbed against the rough surface of a matchbox. This is caused by the large friction produced between the matchstick and the box. Hence, the sides of matchboxes are made rough.

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