MHT CET 2024 Physics question

When the dielectric is placed in an external electric field, the electric field inside the dielectric is

(A)less than the external electric field.Correct
(B)larger than external electric field
(C)equal to the external electric field
(D)equal to or greater than external electric field

Answer: (A)

Solution

When a dielectric is placed in an external field , its molecules get polarised (induced or aligned dipoles). The bound charges that appear on the surfaces produce an induced field inside the dielectric directed opposite to . The net field is therefore E_0$ -

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Question ID VK-099787