Question

Plastic and glass rods that have been charged by rubbing with wool and silk, respectively, hang by threads.

Answer 1

Answer:

Explanation:

Given

A plastic rod is rubbed with a woolen cloth and the Glass rod is rubbed with silk rod.

After the rubbing Plastic rod will acquire the negative rod and the glass rod will acquire a positive charge.

(a)If an object repels the plastic rod then it must be of the same nature i.e. of negative charge.

As the object is negative in nature it will attract the glass rod.

(b)Another object is attracting the plastic rod i.e. the object must be positively charged as a plastic rod.  This happens because the opposite charge attracts and same charge repel each other.

It will repel the glass rod