Why does dust settle on a mirror no matter how much you rub it with a dry cloth?
When we rub the mirror with a dry cloth to clean it, the mirror gets electrically charged. Hence, a mirror attracts dust particles.
Why does dust settle again and again on the glass screen of a TV set?
Why does a plastic comb rubbed with dry hair attract bits of paper?
Why does a plastic comb rubbed with dry hair attract tiny pieces of paper?
Why does a bowler rub the cricket ball on his clothes before his cricket match?