Light ray
Water droplet
Internal reflection
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1.
6.10 Rainbow production
Answers
Answer:
1. Light Ray- light ray is a line (straight or curved) that is perpendicular to the light's wavefronts; its tangent is collinear with the wave vector. Light rays in homogeneous media are straight. They bend at the interface between two dissimilar media and may be curved in a medium in which the refractive index changes.
2. Internal Reflection : Total internal reflection is defined as: The phenomenon which occurs when the light rays travel from a more optically denser medium to a less optically denser medium.
3. Rainbow Production- Rainbows are produced by a combination of refraction and reflection. You may have noticed that you see a rainbow only when you look away from the sun. Light enters a drop of water and is reflected from the back of the drop, as shown in Figure 4. The light is refracted both as it enters and as it leaves the drop.