Question

when acopper plate is rubbed with sand paper it becomes shing​

Answer 1

Answer:

Copper and lead is shiny after rubbing on sand paper. Explanation: Metals have a lustre as their physical property.

Explanation:

Answer 2

Answer:

Explanation:

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