Light

They all reflect at $90^\circ$

They reflect in parallel

They reflect in different directions

They pass through the surface

Reflected ray

Surface of the mirror

Normal at the point of incidence

Horizontal axis

Cardboard

Old wooden door

Polished steel plate

Clothing fabric

Law of Refraction

Law of Reflection

Newton's Laws

Law of Gravity

The reflected ray must lie in a plane perpendicular to the sheet of paper.

The reflected ray will be seen only if the paper is folded at the point of incidence.

The reflected ray must also lie on the same flat sheet of paper.

The reflected ray can be in any direction as long as the angle of reflection is correct.

$30^{\circ}$

$45^{\circ}$

$60^{\circ}$

$90^{\circ}$

$20^{\circ}$

$40^{\circ}$

$70^{\circ}$

$140^{\circ}$

$0^{\circ}$

$90^{\circ}$

$180^{\circ}$

$45^{\circ}$

The ray is parallel to the mirror surface.

The ray is incident at $90^{\circ}$ to the normal.

The ray is incident normally to the mirror surface.

Reflection did not occur.

$i = r$

$\delta = 180 - (i+r)$

$\delta = 180 - 2r$

$\delta = 90 - i$

Because they use refraction

Because of multiple reflections between two mirrors

Because they act as a kaleidoscope

Because they use concave reflection

A battery inside the tube

External ambient light entering through the frosted end

Light produced by the glass pieces

Light from the viewer's eye

Zero

One

Ten

Infinite

Beautiful form to see

Small broken glass

Dark room

Mirror reflection

Because of the ground glass plate.

Because of the properties of plane mirrors.

Because of the triangular arrangement.

Because the mirrors are silvered on the front.

No patterns will be formed.

A square-based repeating pattern will be formed.

The patterns will be circular only.

Only one image will be formed.

$5^{\circ}$

$10^{\circ}$

$15^{\circ}$

$20^{\circ}$

2

3

1

4

The mirrors must be 100% reflective

The object must be a point source

The mirrors must be made of plastic

The object must be placed at the focal point

9

8

7

10

Red

Yellow

Green

Violet

Red, Orange, Yellow, Green, Blue, Indigo, Violet

Red, Green, Blue, Yellow, Orange, Indigo, Violet

Red, Yellow, Orange, Green, Indigo, Blue, Violet

Red, Orange, Green, Yellow, Blue, Violet, Indigo

The same

Different

Zero

Infinite

Red

Violet

Yellow

Green

The component with the highest speed

The component with the longest wavelength

The component with the shortest wavelength

The component with the lowest frequency

Dispersion would be even greater.

Dispersion would not occur.

Only red light would be visible.

The light would turn black.

Its transparency

Its ability to change the frequency of light

Its optical density variation for different colors

Its smooth surface

The deviation increases continuously.

The deviation decreases continuously.

The deviation first decreases to a minimum and then increases.

The deviation first increases to a maximum and then decreases.

Inside the violet arc.

Outside the red arc.

Between the blue and green arcs.

In the center of the rainbow circle.

The sun must be behind the observer's head.

The sun must be exactly $90^{\circ}$ to the side of the observer.

The sun must be in front of the observer, blocked by the rain.

The sun's position doesn't matter as long as there is light.

Cornea

Iris

Eye Lens

Optic Nerve

To change the focal length

To clear the blind spot

To keep the eyes moist and clean

To sense different colors

Magnifiers

Contact lenses

Braille system

Telescopic aids

Aqueous humor

Vitreous humor

Saline

Plasma

It allows them to see objects clearly in total darkness.

It provides a much wider field of view to detect movement all around.

It enables them to focus on a single point with both eyes simultaneously.

It allows the eye to change its shape to see distant stars.

They use magnifying lenses to refract light and enlarge text.

They are surgical methods used to repair the eye lens.

They utilize other senses, such as touch or hearing, to assist in communication.

They are only used to change the color of the iris for cosmetic reasons.

The same 63 dot patterns used for letters

Special colors that can be felt by heat

A different system of 12 dots per cell

Sound-producing tactile buttons

Due to the slow physical contraction of the ciliary muscles.

Because the chemical reaction in the photoreceptors and the neural signal take time to fade.

Because light continues to reflect inside the vitreous humor.

Because the brain requires that time to process the 'inverted' image.

Dots 1, 2, 3 on the left; Dots 4, 5, 6 on the right.

Dots 1, 2, 3 on the top; Dots 4, 5, 6 on the bottom.

Dots are numbered clockwise from the top left.

Dots are numbered randomly within the grid.

Only the lens is capable of bending light.

Both the cornea and the lens contribute to the total convergence of light rays.

The cornea reflects light while the lens refracts it.

Light travels faster in the lens than in the cornea.

Ignore it

Ask a friend to read for you forever

Inform your parents and get an eye checkup

Sit even further away

A person who writes books for the blind

A machine similar to a typewriter used to produce Braille

A special pen that talks

A magnifying glass

By listening to the paper

By running fingers over the raised dots

By smelling the ink

By tasting the dots

It makes the eyes bigger

It can cause infections or scratches on the cornea

It improves eyesight

It changes the eye color

To erase mistakes on Braille paper

To punch holes/dots into the paper through a slate

To read the dots by scanning them

To measure the distance between two dots

Reading the text out loud

Magnifying the text on a screen with high contrast

Changing the texture of the paper

Vibrating the desk

Lens

Cornea

Pupil

Retina

Splash eyes with clean, room-temperature water multiple times a day

Use anyone's towel to wipe eyes to build immunity

Read in the brightest possible sunlight to strengthen the retina

Use a sharp pin to remove dust particles from the eyelid

Reduction in the field of view and loss of depth perception (three-dimensional vision)

Inability to perceive any color

Total loss of the ability to focus on distant objects

Inability of the pupil to contract in bright light

Charles Barbier

Valentin Haüy

Napoleon Bonaparte

Thomas Armitage