MHT CET · Physics · Ray Optics
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 ' \(\mathrm{X}\) ', glass w.r.t. water is ' \(Y\) and air w.r.t. glass is ' \(\mathrm{Z}\) '. Which one of the following is correct?
- A \(Y Z=X\)
- B \(X Y Z=1\)
- C \(X Y=Z\)
- D \(X Z=Y\)
Answer & Solution
Correct Answer
(B) \(X Y Z=1\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & X=\frac{v_a}{v_w}, Y=\frac{v_w}{v_g}, Z=\frac{v_g}{v_a} \\ & \therefore X Y Z=1\end{aligned}\)
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