Light travelling through three transparent substances follows the path shown in figure.
Arrange the indices of refraction in order from smallest to largest. Note that total internal reflection does occur on the bottom surface of medium 2

Question

Infinity Learn · Accepted Answer

As the ray moves toward the normal while entering medium $$2$$ from $$1$$, we have $$n2$$> $$n1For$$ total internal reflection at interface of $$2$$ and $$3$$, $$n2$$ > $$n3$$.Besides $$n3should$$ also be less than $$n1or$$ else ray would haveemerged in medium $$3$$, parallel to its path in medium $$1$$.Hence, $$n3$$ < $$n1$$ < $$n2$$ is the correct order.

Light travelling through three transparent substances follows the path shown in figure.
Arrange the indices of refraction in order from smallest to largest. Note that total internal reflection does occur on the bottom surface of medium 2

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Light travelling through three transparent substances follows the path shown in figure.Arrange the indices of refraction in order from smallest to largest. Note that total internal reflection does occur on the bottom surface of medium 2

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Light travelling through three transparent substances follows the path shown in figure.
Arrange the indices of refraction in order from smallest to largest. Note that total internal reflection does occur on the bottom surface of medium 2