Light Unit

Question 1

Define electromagnetic radiation

Answer 1

Energy in the form of electromagnetic waves, including light

Question 2

Define transmission

Answer 2

The passage of electromagnetic waves through a medium or space

Question 3

Define reflection

Answer 3

The bouncing back of waves when they encounter a surface they cannot pass through

Question 4

Define absorption

Answer 4

The process in which energy of electromagnetic ways is taken up by matter and converted into other forms of energy

Question 5

Define luminous

Answer 5

emitting light

Question 6

Define opaque

Answer 6

not allowing light to pass through, preventing the transmission of visible light

Question 7

Define Transparent

Answer 7

Allowing light to pass through, enabling the transmission of visible light

Question 8

Define regular reflection

Answer 8

The reflection of light that occurs in a parallel manner, creating a light and distinct image

Question 9

Define Irregular reflection

Answer 9

The reflection of light occurs in various directions, producing a scattered damage

Question 10

Define angle of incidence

Answer 10

The angle between an instant rate and the normal (perpendicular line) to a surface

Question 11

Define angle of reflection

Answer 11

The angle between a reflected rate and the normal to a surface

Question 12

Define refraction

Answer 12

Depending of light as it passes from one medium to another with a different refractive index

Question 13

Define refractive index

Answer 13

A measure of how much a medium can bend like, expressed as the ratio of speed of light in a vacuum to the speed of light in the medium

Question 14

Define total internal reflection

Answer 14

The complete reflection of light within a medium when encounters a boundary with a lesson medium at an angle greater than the critical angle

Question 15

Define convex

Answer 15

Curved outward, like the surface of a sphere

Question 16

Define concave

Answer 16

Curved inward, like the surface of a sphere