Reflection And Refraction Homework Quiz.

Light travels in straight lines because it is an electromagnetic wave. Electromagnetic waves, including light, consist of oscillating electric and magnetic fields that propagate through space. These waves travel in a straight line because they do not require a medium to propagate, unlike mechanical waves. This property allows light to travel in a straight line until it encounters an obstacle or is refracted or reflected by a medium.

When a ray of light hits a plane mirror, the angle of incidence is equal to the angle of reflection. In this case, the ray of light hits the mirror at 35 degrees from the normal, so the angle of reflection will also be 35 degrees.

Refraction is the phenomenon where light changes direction as it passes from one medium to another, due to the change in its speed. When light encounters a boundary between two different mediums, such as air and water, it bends or changes its direction. This bending of light is known as refraction. Therefore, the correct answer is "When light bends at a boundary."

The ray of light that first strikes a surface is called the incident ray. It refers to the initial path of light before it interacts with the surface. This ray is responsible for initiating the process of reflection or refraction, depending on the properties of the surface it encounters.

When light travels slower in an object, it indicates that the object is more dense. This is because the speed of light is inversely proportional to the density of the medium it is passing through. When light encounters a denser medium, such as a solid or a liquid, its speed decreases. Therefore, the correct answer is "dense."

Because the angle of refraction bends toward the normal when it goes from a less dense to a more dense medium the answer can only be 13 as its the only angle less than the 15 degree incident ray.

Reflection and refraction are two different phenomena.

The correct answer is diffuse. Diffuse reflection refers to the reflection of light on a rough and dull surface, where the light rays scatter in different directions. This type of reflection does not produce a clear image or a mirror-like reflection, unlike specular reflection. Diffuse reflection is commonly observed on surfaces such as paper, walls, or fabrics, where the light is scattered in various directions, resulting in a softer and less intense reflection.

The line perpendicular to the reflective surface is known as the normal. The normal is an imaginary line that is drawn at a right angle to the surface at the point where the incident ray strikes the surface. It is used to determine the angle of incidence and the angle of reflection. The normal is an important concept in optics and is used to understand how light interacts with reflective surfaces.

Specular reflection is the name given to the type of reflection you see on a smooth shiny surface. This type of reflection occurs when light rays bounce off a surface at the same angle they hit it, resulting in a clear and mirror-like reflection. Diffusion, diffuse, and diffracted reflections, on the other hand, refer to reflections that occur when light rays scatter in different directions, resulting in a less defined and more scattered reflection.

When light travels from a more dense medium to a less dense medium, the angle of refraction is greater than the angle of incidence. This is due to the bending of light as it passes from one medium to another with different optical densities. The change in density causes the light to change its speed and direction, resulting in a larger angle of refraction compared to the angle of incidence. This phenomenon is known as refraction and is governed by Snell's law.

When a ray of light passes from a more dense medium to a less dense medium, it undergoes refraction. Refraction is the bending of light as it passes from one medium to another. In this case, the refracted ray speeds up because the less dense medium allows the light to travel faster compared to the more dense medium. This change in speed causes the ray to change direction, resulting in refraction.

When we see an object, the light from the room reflects off the object and then travels to our eyes. This is how we perceive the object and its color. The other options are not correct because the light is not produced by the object itself, it does not come from our eyes, and not all colors of the visible light spectrum are necessarily reflected from the object.

When light travels from a less dense medium to a more dense medium, the angle of refraction is less than the angle of incidence. This is because light slows down when it enters a more dense medium, causing it to bend towards the normal line. The amount of bending is determined by the refractive index of the medium, which is greater than 1 for a more dense medium. As a result, the angle of refraction is smaller than the angle of incidence.