Answer
Verified
377.4k+ views
Hint: First, the relation between the refractive index and the dielectric constant has to be included. Next to be noted that the refractive index of a material is the ratio of the velocity of the light in air to the velocity of the light through this material or medium.
From these relations, the velocity of light in this given medium can be found.
Formula used:
Refractive index, $n = \sqrt \varepsilon $ , $\varepsilon $ is the dielectric constant of mica.
And, $n = \dfrac{c}{v}$,
$c$ is the velocity of the light in air and $v$ is the velocity of the light through mica.
$\therefore \sqrt \varepsilon = \dfrac{c}{v}$
Complete step by step answer:
The relation between the dielectric constant and the refractive index of some medium or material is given by, $n = \sqrt \varepsilon $,
Let, $\varepsilon $ is the dielectric constant of mica.
And, $n$ is the Refractive index of this material.
We know that the refractive index is the ratio of the velocity of the light in air to the velocity of the light through this material or medium.
If $c$ is the velocity of the light in air and $v$ is the velocity of the light through mica,
Then, $n = \dfrac{c}{v}$
$\therefore \sqrt \varepsilon = \dfrac{c}{v}$
$ \Rightarrow v = \dfrac{c}{{\sqrt \varepsilon }}$
Given that, $\varepsilon = 6$ and we know $c = 3 \times {10^8}m/s$
$\therefore v = \dfrac{{3 \times {{10}^8}}}{{\sqrt 6 }}$
$ \Rightarrow v = 1.22 \times {10^8}$
So, the velocity of the light through mica is $1.22 \times {10^8}$, approximately $1.2 \times {10^8}m/s$
So, the correct answer is “Option C”.
Note: The dielectric constant can be the number of electrical potential energy, within the sort of induced polarization that keeps during a given volume of matter underneath the action of an electrical field. It's expressed because of the magnitude relation of the dielectric permittivity of the material to a vacuum or dry air.
Dielectric means an insulating or an awfully poor conductor of electrical current. Once dielectrics are kept in an electrical field, no current flows in them as a result of, in contrast to metals, they have no loosely bound, or free, electrons which will drift through the material.
From these relations, the velocity of light in this given medium can be found.
Formula used:
Refractive index, $n = \sqrt \varepsilon $ , $\varepsilon $ is the dielectric constant of mica.
And, $n = \dfrac{c}{v}$,
$c$ is the velocity of the light in air and $v$ is the velocity of the light through mica.
$\therefore \sqrt \varepsilon = \dfrac{c}{v}$
Complete step by step answer:
The relation between the dielectric constant and the refractive index of some medium or material is given by, $n = \sqrt \varepsilon $,
Let, $\varepsilon $ is the dielectric constant of mica.
And, $n$ is the Refractive index of this material.
We know that the refractive index is the ratio of the velocity of the light in air to the velocity of the light through this material or medium.
If $c$ is the velocity of the light in air and $v$ is the velocity of the light through mica,
Then, $n = \dfrac{c}{v}$
$\therefore \sqrt \varepsilon = \dfrac{c}{v}$
$ \Rightarrow v = \dfrac{c}{{\sqrt \varepsilon }}$
Given that, $\varepsilon = 6$ and we know $c = 3 \times {10^8}m/s$
$\therefore v = \dfrac{{3 \times {{10}^8}}}{{\sqrt 6 }}$
$ \Rightarrow v = 1.22 \times {10^8}$
So, the velocity of the light through mica is $1.22 \times {10^8}$, approximately $1.2 \times {10^8}m/s$
So, the correct answer is “Option C”.
Note: The dielectric constant can be the number of electrical potential energy, within the sort of induced polarization that keeps during a given volume of matter underneath the action of an electrical field. It's expressed because of the magnitude relation of the dielectric permittivity of the material to a vacuum or dry air.
Dielectric means an insulating or an awfully poor conductor of electrical current. Once dielectrics are kept in an electrical field, no current flows in them as a result of, in contrast to metals, they have no loosely bound, or free, electrons which will drift through the material.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
In Indian rupees 1 trillion is equal to how many c class 8 maths CBSE
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE