T-Level 2.8 Light Principles

What is the phenomenon called when light bends as it passes from one medium to another?

• Reflection

• Refraction

• Diffraction

• Dispersion

Which of the following best describes the difference between artificial and natural light?

• Artificial light is always brighter than natural light.

• Natural light comes from the sun, while artificial light is man-made.

• Artificial light can cause glare but natural light cannot.

• Natural light is used only during the day, while artificial light is used only at night.

What is glare?

• The reflection of light off a smooth surface

• A focused beam of light that enhances visibility

• Excessive brightness that causes visual discomfort

• The bending of light rays as they pass through a medium

Which type of light is directed towards a specific area to enhance visibility?

• Reflected light

• Diffused light

• Directed light

• Ambient light

What does the term "reflected light" refer to?

• Light that is absorbed by surfaces and not visible

• Light that is emitted directly from a source

• Light that bounces off surfaces and contributes to overall illumination

• Light that changes direction without changing medium

What is the flow of light energy primarily dependent on?

• The color of the light source

• The angle of incidence

• The medium through which light travels

• The intensity of the light source

What does the daylight factor measure?

• The percentage of daylight that reaches a specific point indoors, compared to the total daylight available outside

• The intensity of sunlight at noon

• The amount of artificial light in a room

• The reflection coefficient of the surfaces in a room

What is color rendering?

• The process of creating artificial light sources

• The ability of a light source to accurately reproduce the colors of various objects in comparison with an ideal or natural light source

• The reflection of colors from a surface under natural light

• The dispersion of light into its component colors

What does the term "efficacy" refer to in lighting?

• The cost of running a light source

• The brightness of a light source

• The amount of light produced per unit of energy consumed

• The durability of a light source

Which of the following is a characteristic of natural light?

• It can be easily controlled and manipulated.

• It has a fixed color temperature.

• It varies in intensity and color throughout the day.

• It is always available, regardless of weather conditions.