Force of Friction MCQs
Practice Force of Friction multiple-choice questions from How Forces Affect Motion (Class 9 Science) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
Force of FrictionQuiz - Solve & Score
Q1. Which has the least value for the same pair of surfaces?
- A.rolling friction
- B.static friction
- C.sliding friction
- D.limiting friction
Answer: A. rolling friction
NCERT fact (physics, chapter 'How Forces Affect Motion'): Rolling friction < sliding < static. Why option A fits - Correct. Distractor analysis: option B) 'static friction' misses the point - It is the largest; option C) 'sliding friction' is wrong because Larger than rolling friction. Final answer - A) rolling friction.
Q2. Which is described: 'opposes relative motion between surfaces'?
- A.Friction
- B.Sliding friction
- C.Rolling friction
- D.Lubricant
Answer: A. Friction
Q3. Which is described: 'acts before motion starts; largest'?
- A.Static friction
- B.Rolling friction
- C.Lubricant
- D.Ball bearings
Answer: A. Static friction
We are told that the numerical data stated in the question (physics, chapter 'How Forces Affect Motion'). What we must find: the requested quantity. From the chapter we use the relation: hence the result = Static friction. Write the electron configuration 2, 8, 8. Matching this against the options, A) Static friction is the answer. As for the others, option B) 'Rolling friction' is incorrect: Rolling friction: smallest; when a body rolls; option C) 'Lubricant' doesn't hold - Lubricant: reduces friction between surfaces.
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