Question : The substances which reduce friction are called _______.
Option 1: fluids
Option 2: magnets
Option 3: springs
Option 4: lubricants
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Correct Answer: lubricants
Solution : The correct option is lubricants .
The substances that reduce friction are called "lubricants". Lubricants create a slippery layer between surfaces in contact, minimising friction, and wear. They play a crucial role in machinery, engines, and various mechanical systems to enhance efficiency and prolong equipment life.
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Question : Which type of friction is considered a self-adjusting force?
Question : Which of the following statements is correct?
I. Rolling friction is greater than the sliding friction.
II. The frictional force exerted by fluids is called drag.
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