WBCS.LIVE practice question

Friction is caused by the ______ on the two surfaces in contact.

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. irregularities
  2. smoothness
  3. densities
  4. gaps

Correct answer and explanation

Correct answer: irregularities

Explanation: āœ… Correct Answer: A. irregularities šŸ“š Explanation: Friction is a force that opposes motion between two surfaces in contact. It is primarily caused by microscopic bumps and 'irregularities' on the surfaces that catch onto each other. Even very smooth-looking surfaces have these tiny peaks and valleys. Increasing the pressure between the surfaces also increases the friction.