Physics · JEE | Electric Charges and Fields

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): When a glass rod is rubbed with silk, the rod acquires positive charge and the silk acquires negative charge. Reason (R): Charge is created during the rubbing process due to frictional heating between dissimilar insulating surfaces. In the light of the above statements, choose the correct answer from the options given below:

1. A
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B
   Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
3. C
   (A) is true but (R) is false.
4. D
   (A) is false but (R) is true.