Physics
Grade-9
Easy
Question
Which is the odd one out?
- Walking
- Wear and tear
- Writing
- Holding
Hint:
The activities of wearing and tearing are different from the activities of walking, holding, and holding.
Wear and tear comes under the disadvantage of friction which causes damage to the machinery.
The correct answer is: Wear and tear
Wear and tear is the odd one out.
- Walking, writing, and holding are the activities of the body which do not need external energy and cause friction with the relative surface like objects that are holding and the road.
- The activities of wearing and tearing need external energy for the hands and for the object being worn or torn.
- While activities such as Walking, writing, and holding are the advantages of friction, friction causes wear and tear of moving parts which is the disadvantage.
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