Question of The Day03-06-2020

Which of the following is not an advantage of friction?


Correct Answer : d ) It causes heating of surfaces in contact.

Explanation :

Friction is a resistive force between two surfaces which are sliding against each other. There are many advantages of friction as it allows us to write using a pencil, walk on the surface of earth, causes wheels of vehicles to grip the road, etc.

Friction causes heating of surfaces in relative motion due to is opposing tendency. Such heating leads to wastage of energy and also substantially increase the risk of failure and weakening of material.

Hence, option (d) is the correct answer.

Questions related to Science are asked in various government exams like RRB JE, RRB NTPC, SSC CHSL, SSC CGL, State PCS, UPSC CDS, UPSC NDA, etc.

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