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Q.20

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 990

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Short Answer

To a fish in an aquarium, the -thick walls appear to be only thick. What is the index of refraction of the walls?

The index of refraction of the walls

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Step by Step Solution

Step 1: Concepts and Principles

Scattering from either a datum plane can create a picture. For refraction from such a surface, the object and image distances are linked by

The negative sign indicates that we are coping with a virtual image. is the index of refraction of the object's medium, is the reflectance of the observer's medium, and distance The focal length and the image distance, being measured from the edge.

Step 2: Given Data

  • is the actual thickness of the walls.
  • is the apparent thickness of the walls.
  • The refractive index of water is

Step 3: Required Data

We're smart enough to figure out just what the walls' index of refraction is.

Step 4: Solution

Calculation includes the picture depth of the interior of both the aquarium walls to the real distance here to fish's eyes.

Step 5: Image Distance

Equation was applied the real image of the exterior of both the aquarium walls to the real distance here to fish's eyes.

Step 6: Exterior and Interior

The difference between the focal length of its overall design dictates the seeming thickness of a walls. So

the exact length of the panels,

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