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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Net dipole moment of a polar linear isotropic dielectric substance is not zero even in the absence of an external electric field. Reason (R) : In absence of an external electric field, the different permanent dipoles of a polar dielectric substance are oriented in random directions. In the light

Options

  1. A(A) is correct but ( R ) is not correct
  2. BBoth ( A ) and ( R ) are correct but ( R ) is not the correct explanation of (A)
  3. CBoth (A) and (R) are correct and (R) is the correct explanation of (A)
  4. D(A) is not correct but ( R ) is correct

Correct answer

D. (A) is not correct but ( R ) is correct

Step-by-step solution

A : Since polar dielectrics are randomly oriental P _ net = 0 . R : If E is absent, polar dielectric remain polar & are randomly oriented.

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