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Question
Frictional force increases when surfaces in contact are made very smooth, because of
Frictional force increases when surfaces in contact are made very smooth, because of
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Solution
The correct option is B Molecular force
When the contact area is made smooth then the molecular forces between surfaces increases this gives rise to frction. Hence (A) is the correct ans.
When the contact area is made smooth then the molecular forces between surfaces increases this gives rise to frction.
Hence (A) is the correct ans.
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