Question

The refractive index of diamond is 2. 42. What is the meaning of this statement?


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Answer 1

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▶ Question :-

→ The refractive index of diamond is 2.42 . What is the meaning of this statement?


$\huge \bf \green{{ \mid \underline{ \overline{Answer:-}}} \mid}$

Firstly ,

→ Refractive index :- It is defined as the speed of light in a first medium with respect to second medium.

°•° Refractive index = Speed of light in air(Vacuum )/ Speed of light in medium.


Here,

→ Rarer medium is Air .

And, The denser medium is diamond.

Because, light is travelling from rarer medium to denser medium .


▶ The refractive index of diamond is 2.42.

→ This statement means that When we say refractive index of diamond is 2.42, it means light is travelling from rarer to denser medium, and speed of light in air (vacuum) is 2.42 times the speed of light in diamond.


OR .


→ The speed of light in diamond is $\bf \frac{1}{2.42}$ times more than the speed of light in vacuum.


✔✔ Hence, it is solved ✅✅.




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Answer 2

$\huge \bf{hey}$

$\huge{ \mathfrak{ \red{here \: is \: answer}}}$

$\bf{given }$
the refractive index of diamond 2.42.


lets start

first we will know what is refraction of light.

$\sf{refraction}$
it is defined as.

when the light travels from opticaly rarer medium to opticaly denser medium or opticaly denser medium to opticaly rarer medium then it changes it path or direction and bents towards or away from the normal.


now what is normal here


normal is the imaginary line drawn by us and it is perpendicular on the light ray.

now refrective index.

refrective index can be defined as ratio of speed of light in vaccum or air to the speed of light in medium.

means

refrective index=speed of light in vaccum/speed of light ain medium.

now come to the statement.

diamond have refrective index of 2.42

it means the speed of light in diamond is
1/2.42 of speed of light in vaccum.


means

speed of light in vaccum= 2.42* speed of light in diamond.


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