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4.2 friction — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics4.2 friction1 Mark
MCQ
Which of the following statements is not true
  • A
    The coefficient of friction between two surfaces increases as the surface in contact are made rough
  • B
    The force of friction acts in a direction opposite to the applied force
  • ✓
    Rolling friction is greater than sliding friction
  • D
    The coefficient of friction between wood and wood is less than 1
✓

Answer

Correct option: C.
Rolling friction is greater than sliding friction
c
(c)Sliding friction is greater than rolling friction.

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