Science
In the diagram shown below n1, n2 and n3 are refractive indices of the media 1, 2 and 3 respectively. Which one of the following is true in this case?
- n1 = n2
- n1 > n2
- n2 > n3
- n3 > n1
Refraction Plane Surfaces
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Answer
n3 > n1
Reason — According to the figure, the light ray bends towards the normal when it passes from medium 1 to medium 2 and then it bends further when it passes from medium 2 to 3. We know, ray of lights bends towards the normal when it passes from rarer to denser medium hence medium 3 is denser than medium 1 i.e., n3 > n1.
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