A light ray travels through three media as shown below. Which of the following shows the ascending order of their refractive indices?
A) Medium 1, medium 2, medium 3 B) Medium 2, medium 3, medium 1 C) Medium 3, medium 1, medium 2 D) Medium 1, medium 3, medium 2
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Answer:
I think there is mistake here
Explanation:
option c
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The ascending order of their refractive indices is A) Medium 1, medium 2, medium 3.
What is refraction?
- Refraction is a particle property of light.
- When a ray of light passes through various medium with different densities, it bends away or towards the normal.
- Normal is an imaginary line that is perpendicular to the interface of two mediums.
- While moving from denser to rarer medium, it bends away from normal and while travelling from rarer to denser medium, it bends towards the normal.
- More the density of medium, greater is the refractive index.
From the figure:
- At the interface of medium 1 and 2, the light bends towards normal and same happens at the interface of medium 2 and 3.
- Density of medium 3 is greater than medium 2 which is greater than medium 1.
Density of medium 1 is least and medium 3 is highest.
Refractive index of medium 3 is highest and medium 1 is the least.
Your question is incomplete, it is missing the figure. You might be referring to the image below:
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