1. Tardigrade
  2. Question
  3. Physics
  4. A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through the opposite face is 4 cm. Then, the refractive index of the material of the cube is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A transparent cube of $15\,cm$ edge contains a small air bubble. Its apparent depth when viewed through one face is $6\,cm$ and when viewed through the opposite face is $4\,cm$. Then, the refractive index of the material of the cube is

ManipalManipal 2006Ray Optics and Optical Instruments

Solution:

Let real depth of the bubble from one side is $x$. Then
$\mu =\frac{x}{6}=\frac{15-x}{4}$
$\therefore x =9\, cm$
Hence, $\mu =\frac{x}{6}=\frac{9}{6}$
$=1.5$