Assertion (A): In ionic dielectrics, P = Pe + Pi. Reason (R): In ionic crystals,

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Question
Assertion (A): In ionic dielectrics, P = P_e + P_i.
Reason (R): In ionic crystals, permanent electric dipole moment is zero.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

Correct Answer

Both A and R are true and R is correct explanation of A

Explanation

In ionic dielectrics ?_p = ?_i e_i r_i and P_o = 0.

Therefore P = P_e + P_i.

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C. critical wavelength for TE₁₀ mode is the same as that for TM₁₀ mode
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A. 3
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Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
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