| ASSERTION: In the absence of an externally applied electric field, the displacement per unit volume of a polar dielectric material is constant. |
| REASON: In polar dielectrics, each molecule has a temporary dipole moment but these are randomly oriented in the absence of an externally applied electric field. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: D
Solution :
In the absence of an externally applied electric field, the displacement per unit volume of a polar dielectric material is always zero and in polar dielectric each molecule has a permanent dipole moment.
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