Question

Absolute refractive indices of medium 'A' and medium 'B' are 'na' and 'nb' respectively what is the refractive index of medium 'B' with respect to medium 'A' ? How does the velocity of light vary with change in the optical density of the media ?

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Answer 1

Explanation:

· How does the velocity of light vary with change in the optical density of the media ? Most correct and fastest answer = Brainliest Answer ☺.

Absolute refractive index of medium a and medium b are na and nb - Brainly.in

31-Oct-2018 · 2 answers

Refractive index of medium b with respect to A = speed of light in medium a / speed of light in medium b. Absolute refractive index = speed of light ...

Answer 2

the refractive index of medium 'B' with respect to medium 'A'

$\rm n_b_a=\frac{n_b}{n_a}$

As the optical density increases the refractive index also increases.

Explanation:

From the basic statement of Snell's Law:

Absolute refractive index of medium A

$\rm n_a=\frac{speed\ of\ light\ in\ air\ }{speed\ of\ light\ in\ medium\ A }$

Absolute refractive index of medium B

$\rm n_b=\frac{speed\ of\ light\ in\ air\ }{speed\ of\ light\ in\ medium\ B}$

$\rm n_b_a=\frac{n_b}{n_a} = \frac{speed\ of\ light\ in\ medium\ A }{speed\ of\ light\ in\ medium\ B}$

• As the optical density increases the speed of light in that medium decreases and hence the ratio of speed of light in air to the speed of light in the medium increases therefore the refractive index increases.

TOPICS: absolute & relative refractive index, Snell's Law

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