Q.

Assertion (A): A non-polar material do not have any permanent electric dipole moment, but when placed in external electric field it develops electric dipole moment.

Reason (R): When a non-polar material is placed in an electric field, the centre of the positive charge distribution of its individual atom or molecule does not coincide with the centre of the negative charge distribution.

In the light of above statements, choose the most appropriate answer from the options given below:

1 Both A and R are correct and R is the correct explanation of A  
2 Both A and R are correct and R is not the correct explanation of A  
3 A is correct but R is not correct  
4 A is not correct but R is correct  

Ans.

(1)

Both A and R are correct and R is the correct explanation of A