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Friction — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceFriction1 Mark
MCQ
Friction between two surfaces cannot be reduced by using.
  • A
    Oil
  • ✓
    Gears
  • C
    Grease
  • D
    Rollers
✓

Answer

Correct option: B.
Gears
A gear is a wheel with teeth along its edge. Gears are used in the transformation of rotational motion. They are not used to reduce friction.

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