When a glass rod is rubbed with a piece of silk cloth the rod
(a) and the cloth both acquire positive charge.
(b) becomes positively charged while the cloth has a negative charge.
(c) and the cloth both acquire negative charge.
(d) becomes negatively charged while the cloth has a positive charge
Answer
(b) becomes positively charged while the cloth has a negative charge.
When two objects are rubbed together, both get electrically charged but with different charges
By convention, the glass rod develops a positive charge.
The silk cloth develops an equal amount of opposite charge, and hence becomes negatively charged.