Question

A plastic rod is rubbed with fur and a glass rod is rubbed with silk (I)...

A plastic rod is rubbed with fur and a glass rod is rubbed with silk

(I) the plastic rod and the silk cloth attract each other

(II) the plastic rod and the silk cloth repel each other

(III) the glass rod and the fur cloth attract each other

(IV) the glass rod and the fur cloth repel each other.

The correct answers are

II and III

I and IV

I and III

II and IV

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