💡
Exploring Optics: Light and Vision Basics
Optics
This set of questions covers fundamental concepts in optics, suitable for middle school students learning about light, reflection, refraction, and the human eye.
light
reflection
refraction
vision
optics
science
20 Questions
Easy
Ages 10+
Aug 22, 2026
About this Study Set
This study set covers Optics through
20 practice questions.
This set of questions covers fundamental concepts in optics, suitable for middle school students learning about light, reflection, refraction, and the human eye. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Exploring Optics: Light and Vision Basics study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the term for light bouncing off a surface?
-
A
Refraction
-
B
Diffraction
-
C
Reflection
-
D
Absorption
2
Which of these colors is NOT part of the visible light spectrum?
-
A
Red
-
B
Green
-
C
Blue
-
D
Infrared
3
When light bends as it passes from one medium to another, it is called:
-
A
Reflection
-
B
Refraction
-
C
Dispersion
-
D
Scattering
4
What is the primary function of the iris in the human eye?
-
A
Focusing light onto the retina
-
B
Detecting color
-
C
Controlling the amount of light entering the eye
-
D
Sending signals to the brain
5
A mirror that curves inwards and magnifies objects is called a:
-
A
Plane mirror
-
B
Convex mirror
-
C
Concave mirror
-
D
Prism
6
What do we call the part of the eye that is sensitive to light and forms an image?
-
A
Cornea
-
B
Pupil
-
C
Lens
-
D
Retina
7
Which of the following objects can produce its own light?
-
A
A book
-
B
A mirror
-
C
A star
-
D
A pencil
8
When white light is split into its constituent colors, this phenomenon is known as:
-
A
Absorption
-
B
Refraction
-
C
Dispersion
-
D
Polarization
9
What type of mirror always forms a virtual, upright, and smaller image?
-
A
Concave mirror
-
B
Plane mirror
-
C
Convex mirror
-
D
None of the above
10
The bending of light as it passes through tiny openings or around obstacles is called:
-
A
Reflection
-
B
Refraction
-
C
Diffraction
-
D
Scattering
11
What part of the eye is a transparent outer layer that covers the iris and pupil?
-
A
Retina
-
B
Lens
-
C
Optic nerve
-
D
Cornea
12
Which of the following is a source of light?
-
A
A shadow
-
B
A sound wave
-
C
The Sun
-
D
A photograph
13
When light strikes a smooth, polished surface, it bounces off in a predictable way. This is:
-
A
Refraction
-
B
Absorption
-
C
Diffusion
-
D
Regular reflection
14
What is the name for the colored part of the eye that surrounds the pupil?
-
A
Sclera
-
B
Cornea
-
C
Iris
-
D
Pupil
15
Which of these materials does NOT allow light to pass through it easily?
-
A
Glass
-
B
Water
-
C
Wood
-
D
Air
16
The phenomenon where light bounces off an uneven surface, scattering in many directions, is called:
-
A
Regular reflection
-
B
Diffuse reflection
-
C
Refraction
-
D
Dispersion
17
What is the main role of the lens in the human eye?
-
A
To protect the eye
-
B
To control light entry
-
C
To focus light on the retina
-
D
To convert light into nerve signals
18
Which statement about shadows is true?
-
A
Shadows are colored.
-
B
Shadows are formed when light is blocked by an opaque object.
-
C
Shadows are always larger than the object.
-
D
Shadows require sound to be formed.
19
A prism splits white light into a spectrum of colors because:
-
A
The prism absorbs some colors.
-
B
Each color of light bends at a slightly different angle.
-
C
The prism emits its own light.
-
D
The prism reflects all colors equally.
20
Which of the following is an example of refraction?
-
A
Seeing your reflection in a mirror
-
B
A magnifying glass making an object appear larger
-
C
Light bouncing off a wall
-
D
A rainbow appearing in the sky
