Question

Assertion : Improper banking of roads causes wear and tear of tyres.
Reason : The necessary centripetal force is provided by the force of friction between the tyres and the road.

Select the correct option.

• A. Both assertion and reason are true and the reason is the correct explanation for the assertion.
  
• B. Both assertion and reason are true but the reason is not the correct explanation for the assertion.
• C. Assertion is true but the reason is false.
• D. Assertion and reason both are false.

Answer 1

The correct option is A Both assertion and reason are true and the reason is the correct explanation for the assertion.


If banking of roads is improper, then static friction $f_s$ will also come into picture to provide the necessary centripetal force.

And as we know, when friction comes into play, there will be wear and tear of the surfaces.

Thus, the reason explains the assertion.