Question

Define the term Refractive Index of a medium. What will be happen if the refractive indices of the two medium are same. Give reason.​

Answer 1

Answer:

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Explanation:

If the refractive index of two medium is same then light wave will travel in a straight line without bending.

According to Snell's law n1sinθ1 =n2 sinθ2

n1 =n2 ⟹θ1 =θ2

​ So we can see that the bending of light will depend upon the refractive index of medium.

Answer 2

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Here is your answer : - ☆~☆

Refractive Index of a media

Definition : The refractive index of a transparent medium is the ratio of speed of light in air or vacuum to that in the given medium .

Mathematically,

$refractive \: index \: = \frac{c}{speed \: of \: light \: in \: the \: medium}$

Also,

We have a relative term of refractive index, which is called the relative refractive index of one medium with respective To The Other medium.

Mathematically,

$relative \: refractive \: index \: of \: a \: w.r.t. \: to \: b = \frac{relative \: refractive \: index \: of \: a}{relative \: refractive \: index \: of \: b}$

$relative \: refractive \: index \: of \: a \: w.r.t \: b \: = \frac{speed \: of \: light \: in \: medium \: b}{speed \: of \: light \: in \: medium \: a}$

Thus, by snell's law

$relative \: refractive \: index \: of \: a \: w.r.t. \: b \: = \frac{\sin(b) }{ \sin(a) }$

when light travels from medium a to medium b, where a is the angle of incidence and b is the angle of refraction.

Case

if the refractive indices of two mediums are same,

then,

the light will get undiffracted because

$\frac{ \sin(b) }{ \sin( a) } = 1 \\ \\ \sin(b ) = \sin(a) \\ \\ a = b$

The angle of incidence = angle of refraction is only possible when they are vertically opposite angles.

That is when the incident ray and the refracted ray are inclined at 180°

Hence, they would pass undeviated.

I hope it helps you