Question:
Which of the following statement/s regarding polarization in materials is/are correct?
A. Piezoelectricity and pyroelectricity are inherent property of crystals.
B. The electric moment is inversely proportional to the electric fiel
D.
C. Above the Curie temperature, the dielectric constant is inversely proportional to \((T-T_c)\) in ferroelectrics.
Which of the following statement/s regarding polarization in materials is/are correct?
A. Piezoelectricity and pyroelectricity are inherent property of crystals.
B. The electric moment is inversely proportional to the electric fiel
D.
C. Above the Curie temperature, the dielectric constant is inversely proportional to \((T-T_c)\) in ferroelectrics.
A. Piezoelectricity and pyroelectricity are inherent property of crystals.
B. The electric moment is inversely proportional to the electric fiel
D.
C. Above the Curie temperature, the dielectric constant is inversely proportional to \((T-T_c)\) in ferroelectrics.
Show Hint
Above Curie temperature, ferroelectrics follow Curie-Weiss law: \(\epsilon \propto \frac{1}{T-T_c}\).
Updated On: May 19, 2026
- A and B Only
- B and C Only
- A and C Only
- A, B and C Only
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Polarization in dielectric and ferroelectric materials depends on crystal structure and temperature.
Step 1: Check statement A.
Piezoelectricity and pyroelectricity are properties of certain non-centrosymmetric crystals. \[ A \text{ is correct} \]
Step 2: Check statement B.
Electric dipole moment or polarization is generally directly related to the applied electric field, not inversely proportional. \[ B \text{ is incorrect} \]
Step 3: Check statement C.
Above Curie temperature, ferroelectrics follow Curie-Weiss law: \[ \epsilon \propto \frac{1}{T-T_c} \] Thus, dielectric constant is inversely proportional to \((T-T_c)\). \[ C \text{ is correct} \] Therefore: \[ A,C \] \[ \therefore \text{Correct Answer is (C)} \]
Polarization in dielectric and ferroelectric materials depends on crystal structure and temperature.
Step 1: Check statement A.
Piezoelectricity and pyroelectricity are properties of certain non-centrosymmetric crystals. \[ A \text{ is correct} \]
Step 2: Check statement B.
Electric dipole moment or polarization is generally directly related to the applied electric field, not inversely proportional. \[ B \text{ is incorrect} \]
Step 3: Check statement C.
Above Curie temperature, ferroelectrics follow Curie-Weiss law: \[ \epsilon \propto \frac{1}{T-T_c} \] Thus, dielectric constant is inversely proportional to \((T-T_c)\). \[ C \text{ is correct} \] Therefore: \[ A,C \] \[ \therefore \text{Correct Answer is (C)} \]
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