M4: Light, Lens, Mirror

Question 1

It is the bouncing of light when it reaches a reflecting surface or a boundary between two media.

Answer 1

Reflection

Question 2

refers to the ray of light that hits the reflecting surface/boundary.

Answer 2

Incident ray

Question 3

refers to the ray of light that bounces back.

Answer 3

Reflected ray

Question 4

is a line perpendicular to the reflecting surface

Answer 4

Normal line

Question 5

are the angles formed by the incident ray and the reflected ray, respectively, with the normal line

Answer 5

Angle of incidence and angle of reflection

Question 6

The angle of incidence, the angle of reflection, and the normal line lie on the same plane.
The angle of incidence is equal to the angle of reflection.

Answer 6

Law of Reflection

Question 7

occurs when light strikes a smooth surface.

Answer 7

Specular/Regular reflection

Question 8

occurs when light strikes a rough surface.
We can see objects around us because of this.

Answer 8

Diffuse/Irregular reflection

Question 9

It is the bending of light due to the change in its speed when it obliquely passes two different media.

Answer 9

Refraction

Question 10

The ______________ of a material (n) is the ratio of the speed of light in a vacuum (c), and the speed of light in that material (v).

Answer 10

refractive index/index of refraction

Question 11

It refers to the passing of light through a material without being absorbed.

Answer 11

transmission

Question 12

It occurs when light strikes a material, and the energy that it carries is absorbed by the atoms of the material.

Answer 12

Absorption

Question 13

When an object REFLECTS all the components of light, it appears _____

Answer 13

White

Question 14

When an object ABSORBS all the components of light, it appears _____.

Answer 14

Black

Question 15

It is the separation of white light into colors (red, orange, yellow, green, blue, and violet) due to refraction.

Answer 15

Dispersion

Question 16

It occurs when particles absorb light and scatter it in all directions.
It depends on the size of the particles.
Small particles scatter components of short wavelengths, whereas larger particles scatter longer wavelengths.

Answer 16

Light Scattering

Question 17

depends on the relative size of the particles and the wavelength of light.

Human eyes are more sensitive to blue frequencies of light (or shorter wavelengths), which is why you see the sky as blue. Violet gets absorbed by the ozone.

Answer 17

Rayleigh scattering

Question 18

refers to the scattering of mostly white light and depends less on the wavelength.

Answer 18

Mie scattering

Question 19

It is the spreading of light when it encounters an obstacle or an opening.
The amount of diffraction depends on the size of the opening and the wavelength of light.

Smaller opening, longer wavelength = greater _________

Answer 19

Diffraction

Question 20

It is the combination of two or more waves into one wave whenever they pass through the same point.

Answer 20

Interference

Question 21

It occurs when the opposite parts of two waves meet.
This results in the cancellation of the two waves. ______________

Answer 21

Destructive Interference

Question 22

It occurs when identical parts of two waves meet.
It results in a new wave with the same wavelength but twice the amplitude.

Answer 22

Constructive Interference

Question 23

a disturbance that passes through a material medium.

Answer 23

Wave

Question 24

Enumerate the properties of a wave:

Answer 24

Wavelength
Frequency
Period
Speed

Question 25

the distance between two consecutive vibrations with the same movement.

Answer 25

Wavelength

Question 26

the number of complete wavelength passing through a point per unit of time. Its SI unit is Hertz (Hz)

Answer 26

Frequency

Question 27

the amount of time it takes for a complete wavelength to pass through a point.

Answer 27

Period

Question 28

the distance a wave can cover per unit of time

Answer 28

Speed

Question 29

the amount of energy that light contains in joules.

Answer 29

Energy

Question 30

The study that treats light as a ray is called?

Answer 30

Geometric Optics

Question 31

a mirror that has a flat and smooth surface. The distance of the image formed by the mirror is equal to the distance of the object from the mirror.

Answer 31

Plane Mirror

Question 32

formed when the light rays coming from a source do not intersect to form an image. formed when the light rays do not actually intersect, but instead appear to diverge from a common point behind a mirror or lens.

Answer 32

Virtual images

Question 33

This would have the light rays actually coming from the location of the image itself. For instance, if you place a paper on the position of the image, the light rays will form an image of the object on the paper formed where the light converges, typically in the focal point of the mirror or the lens. These are inverted.

Answer 33

Real image

Question 34

Some mirrors that are curved are also useful in forming certain images. These mirrors are called?

Answer 34

Spherical Mirrors

Question 35

a defect that occurs when the outer parts of a mirror do not bring light rays into a similar focus as that of the central part.

Answer 35

Spherical aberration

Question 36

may be applied to approximate the shape of the parabola by fitting a spherical shape on to it.

Answer 36

Paraxial Approximation

Question 37

Sharp images are forced at the single point named?

Answer 37

Focus

Question 38

The line containing the Focus is called?

Answer 38

Principle axis

Question 39

The distance between point a and f is called?

Answer 39

focal length

Question 40

The center of the sphere is called?

Answer 40

center of curvature

Question 41

the distance from 2f and the vertex of the mirror

Answer 41

Radius of curvature

Question 42

Mirrors are made out of either _______ or _______.

Answer 42

Silver nitrate or aluminum

Question 43

is a piece of transparent material, could be glass or plastic, that is shaped so as to cause light rays to bend in a specific way as they pass through it.

Answer 43

Lens

Question 44

The vertical line slicing the lens is called...?

Answer 44

Optical Axis