33. Geometric Optics

What is the spreading out of light into different colors called?

When a wireless transmission passes from one medium to another with a different refractive index $n$, how does refraction affect the propagation of the signal?

Which of the following is an example of refraction?

When light passes from one medium to another, under what conditions does refraction occur, and when does scattering occur?

Which of the following statements correctly describes light refraction in water?

Refraction results from differences in light’s

When light passes from one medium to another, which property of light remains unchanged?

Which of the following structures is not responsible for the refraction of $\mathrm{light}$?

Why is light refracted when it passes from air into water?

Why does $\text{white light}$ create a rainbow when it passes through a $\text{prism}$?

A fish is at a real depth $d$ below the surface of water (refractive index $n$). When viewed from directly above (normal incidence), what is the apparent depth of the fish as seen by an observer in air?

What effect does a prism have on $\text{white light}$ when it passes through it?

A person standing waist-deep in a swimming pool appears to have short legs because of the refraction of light. Which of the following best explains this phenomenon?

Which of the following best explains how $Snell’s$ law is used in designing lenses for optical devices?

When light passes from air into water, which of the following correctly describes what happens to its speed and direction according to $Snel’sLaw$?