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Frictional Force

Friction caus...

Question

Friction causes wear and tear on materials.

A

True

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B

False

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Solution

The correct option is A True

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Similar questions

Q. Find the incorrect statement about friction from the following ones.
(a) Friction is caused by the interlocking of irregularities in the two surfaces in contact.
(b) Using a good quality lubricant, the frictional force between two surfaces can be eliminated.
(c) Frictional force causes wear and tear.
(d) Frictional force is independent of surface area in contact.

Q. The disadvantage of friction is that
(a) it causes wear and tear
(b) it can make machine parts heat up
(c) it can result in wastage of energy and fuel
(d) all of these

Q. 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.

Q. In which of following, friction is acting as a friend:
1. Walking on road

2. Writing with chalk

3. Wear and tear of tyres

4.Catching fire in the rocket at a high speed

Q. Difference between wear and tear of tyres and skidding? As if a car if not skidding then why its tyre wear and tear?

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Frictional Force

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