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Due to electrostatic induction

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Two inflated balloons rubbed with woolen cloth repel each other

A plastic scale rubbed on dry hair attracts very small pieces of paper

When a refill rubbed with polythene sheet is brought closer to inflated balloon rubbed with woolen cloth both are attracting each other

There will be attraction between a charged glass rod and a charged plastic straw which is rubbed with polythene sheet

answer is B.

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Detailed Solution

Rubbing with polythene sheet it become charged body then it can attract pieces of paper. When a plastic scale rubbed on dry hair it gets electrically charged. These plastic scales exert electric force on tiny particles and attracts them

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