Question

Assertion (A) : Non-polar amterials do not have my permanent dipole moment.
Reason (R) : When an non-polar material is placed in a electric field the centre of the positive charge distribution of it's individual atom or molecule coinsides with the centre of the negative charge distribution.
In the light of above statements, choose the most appropriate answer from the options given below.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct and (R) is not the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Answer 1

Answer: (C)

S1 : In nonpolar molecules, centre of +ve charge coincides with centre of -ve charge, hence net dipole moment is comes to zero.
S2 : When non polar material is placed in external field, centre of charges does not coincide, hence give non zero moment in field