A ray of light travels from air to water to glass and again from glass to air. Refractive index of water w.r.t. air is ' X ', glass w.r.t. water is ' Y and air w.r.t. glass is ' Z

Question

A ray of light travels from air to water to glass and again from glass to air. Refractive index of water w.r.t. air is ' $X$ ', glass w.r.t. water is ' $Y$ and air w.r.t. glass is ' $Z$ '. Which one of the following is correct?

Options:

Answer:

B

Solution:

$X = \frac{v _{a}}{v _{w}}, Y = \frac{v _{w}}{v _{g}}, Z = \frac{v _{g}}{v _{a}} ∴ X Y Z = 1$

TestHub · Accepted Answer

​ X = v w ​ v a ​ ​ , Y = v g ​ v w ​ ​ , Z = v a ​ v g ​ ​ ∴ X Y Z = 1 ​

Physics - Geometrical Optics Question with Solution | TestHub

Options:

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