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Polarisation Of Dielectrics MCQ Level - 1 - Physics MCQ


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10 Questions MCQ Test Topic wise Tests for IIT JAM Physics - Polarisation Of Dielectrics MCQ Level - 1

Polarisation Of Dielectrics MCQ Level - 1 for Physics 2024 is part of Topic wise Tests for IIT JAM Physics preparation. The Polarisation Of Dielectrics MCQ Level - 1 questions and answers have been prepared according to the Physics exam syllabus.The Polarisation Of Dielectrics MCQ Level - 1 MCQs are made for Physics 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Polarisation Of Dielectrics MCQ Level - 1 below.
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Polarisation Of Dielectrics MCQ Level - 1 - Question 1

Polarization per unit applied electric field is given by

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 1

The correct answer is: electric susceptibility

Polarisation Of Dielectrics MCQ Level - 1 - Question 2

Two parallel plates have equal and opposite charges. When the space between them is evacuated the electric intensity is 3 × 105V/m and when the space is filled with dielectric the electric intensity is 1.0 × 105V/m. The induced charge density on the surface of the dielectric.

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 2

Electrified  in vacuum 

Surface density of induced charges, 

The correct answer is: 

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Polarisation Of Dielectrics MCQ Level - 1 - Question 3

Polarization in a dielectric on application of electric field is

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 3

The correct answer is: Displacement / separation of opposite charge centers

Polarisation Of Dielectrics MCQ Level - 1 - Question 4

The outer sphere of spherical capacitor is earthed. For increasing its capacitance.

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 4

The correct answer is: dielectric material is filled between the two spheres

Polarisation Of Dielectrics MCQ Level - 1 - Question 5

What is the new capacitance of the plates, when a slab of Dielectric Constant K and thickness one-fourth of the separation of plate is inserted between the plates?

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 5

As the slab is inserted between the plates,
V = E0(d/4)/K + Eo(3d/4)
= Eod (1/4K + 3/4)
= Vo(1+3K)/4K
Now we know, C = Qo/V
= 4KCo/(1 + 3K)

Polarisation Of Dielectrics MCQ Level - 1 - Question 6

If   is the polarization vector and  is the unit vector normal to the surface then a polarized piece of a dielectric can be regarded as equivalent to

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 6

The correct answer is: charges of a volume density and surface charges of density ρb is given by 

Polarisation Of Dielectrics MCQ Level - 1 - Question 7

The susceptibility of a polar dielectric is temperature dependent because

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 7

The correct answer is: They are necessarily anisotropic in a nature

Polarisation Of Dielectrics MCQ Level - 1 - Question 8

At the boundary or interface between two dielectric media the vector  and   are such that

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 8

The correct answer is: The tangential component of     and the normal component of     is same on each side of the boundary. The latter condition is however, valid only in the absence of any free charges on the interface

Polarisation Of Dielectrics MCQ Level - 1 - Question 9

In a dielectric conductor boundary (interface). The tangential component of electric field is

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 9

The correct answer is: 0

Polarisation Of Dielectrics MCQ Level - 1 - Question 10

The behavior of a dielectric is

Detailed Solution for Polarisation Of Dielectrics MCQ Level - 1 - Question 10

The correct answer is: different for static and varying field and is very much depend on the frequency

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