Identify the properties of light shown in each situation as refraction, reflection, dispersion, or speed.
REFRACTION REFLECTION DISPERSION SPEED
A pencil in a glass of water.
Looking at your own image at the mirror.
A rainbow after a rain.
A straw in a glass of iced tea.
Sunlight coming from the sun.
A boy looking at his image at the car’s window.
Seeing a fish under the water.
Image displacement in the water
.
Diesel poured in the water.
A coin in the water.
A pencil in a glass of water.
Looking at your own image at the mirror.
A rainbow after a rain.
A straw in a glass of iced tea.
Sunlight coming from the sun.
A boy looking at his image at the car’s window.
Seeing a fish under the water.
Image displacement in the water.
Diesel poured in the water.
A coin in the water.
REFRACTION REFLECTION DISPERSION SPEED
A pencil in a glass of water.
Looking at your own image at the mirror.
A rainbow after a rain.
A straw in a glass of iced tea.
Sunlight coming from the sun.
A boy looking at his image at the car’s window.
Seeing a fish under the water.
Image displacement in the water
.
Diesel poured in the water.
A coin in the water.
A pencil in a glass of water.
Looking at your own image at the mirror.
A rainbow after a rain.
A straw in a glass of iced tea.
Sunlight coming from the sun.
A boy looking at his image at the car’s window.
Seeing a fish under the water.
Image displacement in the water.
Diesel poured in the water.
A coin in the water.
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Answer:
Whenever you look into a mirror or squint at sunlight glinting off a lake, you are seeing a reflection. When you look at the text in a book, you are actually seeing the light that is reflected from it. Large telescopes use reflections to form images of stars and other astronomical objects. In fact, the only way we can see an object that does not itself emit light is if that object reflects light.
The law of reflection is illustrated in, which also shows how the angles are measured relative to the perpendicular to the surface at the point where the light ray strikes. The law of reflection is very simple: The angle of reflection equals the angle of incidence. When we see our reflection in a mirror, it appears that our image is actually behind the mirror — we see the light coming from a direction determined by the law of reflection. The angles are such that our image appears exactly the same distance behind the mirror as we stand away from the mirror. We expect to see reflections off a smooth surface. However, light strikes different parts of a rough surface at different angles, and it is reflected in many different directions (“diffused”). Diffused light is what allows us to see a sheet of paper from any angle. Many objects, such as people, clothing, leaves, and walls, have rough surfaces and can be seen from all sides. A mirror, on the other hand, has a smooth surface (compared with the wavelength of light) and reflects light at specific angles. When the moon reflects off the surface of a lake, a combination of these effects takes place.
Explanation:
Mirror Reflection: An image in a mirror appears as though it is behind the mirror. The two rays shown are those that strike the mirror at just the correct angles to be reflected into the eyes of the viewer. The image appears to come from the direction the rays are coming from when they enter the viewer’s eyes. Law of Reflection: The law of reflection states that the angle of reflection equals the angle of incidence: θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.