Q37. A dielectric material placed in uniform electric field, which of the following option is NOT CO

Q: What is the correct answer for CUET UG Physics Q37?

The correct answer is B. Let's analyze each statement regarding dielectric materials: (a) **The free movement of charges in a dielectric is not possible.** This statement is correct. Dielectrics are fundamentally insulators, meaning their electrons are tightly bound to their atomic nuclei or molecules and are not free to move throughout the material. This lack of free charge carriers distinguishes them from conductors. (b

Q: Q37. A dielectric material placed in uniform electric field, which of the following option is NOT CORRECT: (a) The free movement of charges in a dielectric is not possible (b) The free movement of…

The correct answer is B. Let's analyze each statement regarding dielectric materials: (a) **The free movement of charges in a dielectric is not possible.** This statement is correct. Dielectrics are fundamentally insulators, meaning their electrons are tightly bound to their atomic nuclei or molecules and are not free to move throughout the material. This lack of free charge carriers distinguishes them from conductors. (b

Q: What are the options for this CUET UG Physics question?

A. The free movement of charges in a dielectric is not possible · B. The free movement of charges in a dielectric is possible · C. The external field induces dipole moment by stretching molecules of dielectrics · D. The external field induces dipole moment by re-orienting molecules of dielectrics

Question

Q37. A dielectric material placed in uniform electric field, which of the following option is NOT CORRECT:
(a) The free movement of charges in a dielectric is not possible
(b) The free movement of charges in a dielectric is possible
(c) The external field induces dipole moment by stretching molecules of dielectrics
(d) The external field induces dipole moment by re-orienting molecules of dielectrics

FirstInTest · Accepted Answer

Let's analyze each statement regarding dielectric materials:
(a) **The free movement of charges in a dielectric is not possible.** This statement is correct. Dielectrics are fundamentally insulators, meaning their electrons are tightly bound to their atomic nuclei or molecules and are not free to move throughout the material. This lack of free charge carriers distinguishes them from conductors.
(b) **The free movement of charges in a dielectric is possible.** This statement is incorrect. As established above, dielectrics are insulators and do not permit the free movement of charges. If charges could move freely, the material would be a conductor, not a dielectric.
(c) **The external field induces dipole moment by stretching molecules of dielectrics.** This statement is correct. For nonpolar dielectric molecules, an external electric field causes a slight displacement of the electron cloud relative to the positive nucleus, creating an induced electric dipole moment by 'stretching' or deforming the molecules. This is known as electronic polarization.
(d) **The external field induces dipole moment by re-orienting molecules of dielectrics.** This statement is correct. For polar dielectric molecules, which possess permanent electric dipole moments, an external electric field exerts a torque that tends to align these dipoles with the field direction, leading to orientational polarization.
Since the question asks for the statement that is NOT CORRECT, option (b) is the answer.

Answer

The free movement of charges in a dielectric is not possible

Answer

The free movement of charges in a dielectric is possible

Answer

The external field induces dipole moment by stretching molecules of dielectrics

Answer

The external field induces dipole moment by re-orienting molecules of dielectrics

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