A : Since polar dielectrics are randomly oriental Pnet=0.
R : If E is absent, polar dielectric remain polar & are randomly oriented.
JEE Main 2025 — Physics Electromagnetism
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 of the above statements, choose the most appropriate answer from the options given below :
Held on 2 Apr 2025 · Verified 6 Jul 2026.
(A) is correct but (R) is not correct
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Both (A) and (R) are correct and (R) is the correct explanation of (A)
(A) is not correct but (R) is correct
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