Question

no matter how much you rub the mirror with a dry cloth why dose dust settles on it immediately?
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Answer 1

Explanation:

A Mirror Or Window Polished By A Dry Cloth On A Dry Day Soon Becomes Dusty. When glass is rubbed with a dry cloth, the friction creates charged static electricity; this in turn attracts small non charged particles of dust.

Answer 2

Answer:

dust will be attracted to surfaces that have some static charge to them. Usually the very act of wiping off the surface with a cloth can charge it. ... Also, it can be an optical illusion that more dust is attracted to mirrors and polished things.