Question

Hey Everyone!!

$\large\bf\red{Q}$ We have two identical metal sheets.One of them is rubbed with sand paper and the other with ordinary paper.The one rubbed with sand paper shines more than the other. Give reason.

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Answer 1

★ The friction between sand paper and metal sheet is very large, compared to that between the ordinary paper and the metal sheet.

✒Thus, the sand paper is able to remove the outer dull layer from the metal sheet more effectively and makes it more shining.

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Answer 2

Answer:

sand paper has rough surface a lot of friction gets created and the top most layer / dirty layer of metal gets worn out and a new shiny layer beneath it will be showed up . but ordinary paer is smoooooth right?

this is the reason.

hope it hepls...........