For students to study effectively for the Board exam, CBSE Class 10 Science Chapter 11 The Human Eye And The Colorful World to NCERT  questions have been provided here.

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Notes for human eye and colourful world class 10 notes for cbse science chapter 11 are developed by OSWAAL subject specialists to help students achieve high marks in the CBSE Board Exam. Students should completely refer to these learning resources in order to comprehend the topics and achieve high scores in the examination.

CBSE Class 10 Science Notes Chapter 11: The Human Eye and the Colorful World & All Remaining Chapters Free PDF Download

CBSE Class 10 Notes Science of All Chapters:

CBSE CLASS 10 SCIENCE NOTES CHAPTER 1 CHEMICAL REACTION

CBSE CLASS 10 SCIENCE NOTES CHAPTER 2 ACIDS BASES AND SALTS

CBSE CLASS 10 SCIENCE NOTES CHAPTER 3 METALS AND NON-METALS

CBSE CLASS 10 NOTES SCIENCE CHAPTER 4

CBSE CLASS 10 SCIENCE NOTES CHAPTER 5 PERIODIC CLASSIFICATION OF EELEMENTS

CBSE Class 10 Science Notes Chapter 6 Life Processes

CBSE CLASS 10 SCIENCE NOTES CHAPTER 7 CONTROL AND COORDINATION

CBSE CLASS 10 SCIENCE NOTES CHAPTER 8 HOW DO ORGANISMS REPRODUCE

CBSE CLASS 10 SCIENCE NOTES CHAPTER 9 HEREDITY AND EVOLUTION

CBSE CLASS 10 SCIENCE NOTES CHAPTER 10 LIGHT REFLECTION AND REFRACTION

CBSE CLASS 10 SCIENCE NOTES CHAPTER 11 THE HUMAN EYE AND THE COLORFUL WORLD

CBSE CLASS 10 SCIENCE NOTES CHAPTER 12 ELECTRICITY

CBSE CLASS 10 SCIENCE NOTES CHAPTER 13 MAGNETIC EFFECTS OF ELECTRIC CURRENT

CBSE CLASS 10 SCIENCE NOTES CHAPTER 14 SOURCE OF ENERGY

CBSE CLASS 10 SCIENCE NOTES CHAPTER 15 ENVIRONMENT

The Human Eye's Structure (human eye and colourful world class 10 notes for cbse science chapter 11)

The eye is spherical in shape and measures 2.3 cm in diameter on average. The cornea, iris, pupil, lens, ciliary muscles, retina, nerve cells, optic nerve, yellow spot, aqueous and vitreous humor, and suspensory ligament are all part of the eye's internal structure.

The human eyes are among the most complex sensory organs in the body. Every component of the human eye plays an important role. The eye is made up of two different parts fused together and both are entirely spherical. It is made up of many types of muscles and tissues that result in it is approximately spherical in shape. 

External Structure of eyes (human eye class 10 notes for cbse science chapter 11)

Sclera: It is a white layer of eyes. It is a fabrication. It is a supporting wall of eyes ball. The interior parts are protected by strong connective tissue.

Conjunctiva

It is a loose tissue that covers the surface of the eye’s ball. It is a clear and thin membrane. It lubricates in nature and maintains the moisture of the eyes.

Cornea: The cornea is transparent in nature. It is a front section of our eye that covers the pupil and iris. It allows the light to enter the eyes.

Iris: It is an important part of the eyes. It is coloured and visible from the outside. The iris plays an important role to regulate the diameter of the pupil in response to the light source. The size of iris is depends upon the amount of light. When a large amount of light enters our eyes then it contrasts and when a small amount of light enters our eyes then it expands.

Pupil: It is the central part of the iris. It is a black hole between the iris. 

Internal Structure of Eyes (human eye class 10 notes for cbse science chapter 11)

Lens :

The eyes lenses are clear and biconvex.  It is transparent in nature and made up of jelly like fluid. Light is refracted by the lens and the cornea to focus on the retina.

Retina :

It is a layer of photoreceptor and glial cell

The retina is the eye’s innermost layer. It is light sensitive and functions as a camera film. It is the site where the image is formed. There are three types of nerve cells are found there.

The optic nerve is found in the back of the eyes. All nerve impulses from the retina to the brain are carried through the optic nerves.

All nerve impulses from the retina to the human brain are carried through the optic nerves.

Aqueous Humour: It is present between the cornea and the eyes lenses. It maintains the moisture of the cornea and the shape of the eyeball.

Vitreous Humour: It is a jelly-like translucent material found between the lens and the retina. Water (99%), collagen, proteins, and other ingredients are included. Vitreous humour protects the eyes and maintains the spherical shape of the eyes.

Defects of vision in human eyes (human eye class 10 notes)

There are commonly three types of defects in human eyes. It is caused by many factors.

1. Myopia: It is also called short-sightedness. In this type of defect the person can see the nearer object clearly but can’t see the farther object. It is correct by wearing a concave lens.
2. Hypermetropia: It is also called farsightedness. In this type of defect, the person can see the farthest object clearly but can’t see the nearer object clearly. It is correct by wearing a convex lens.
3. Presbyopia: In this type of defects the person cannot seen the nearest and farther object clearly. It is correct by wearing a cylindrical lens.

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Frequently Asked Questions in CBSE Class 10 Science Chapter 11 The Human eye And The Colorful World

Write a short note on human eyes? (human eye class 10 notes)

The human eye is an optical instrument which is used to see an object. It is an important sense organ of the human body. It works similarly to a camera.

It does not have a perfectly spherical form. External components are visible from the outside of the eyes but the internal components are not visible from the outside of the eyes.

When white light is diffused by a prism, which colour will be refracted the most? 

The medium’s refractive index is highest for violet light and lowest for the red light. When white light passes through a prism, it disperses into seven constituent colours, with violet light exhibiting the greatest variance.

Why we cannot see through the fog?

Fog is a visible aerosol made up of microscopic water droplets or ice crystals that stick to the earth’s surface. When light travels through the fog, it reacts with the fog’s water droplets, scattering it. Fog droplets disperse light differently in different directions. Light is scattered from water droplets and diverse, it causes the eye to dilate.

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NCERT SOLUTIONS FOR CLASS 10 SCIENCE CHAPTER 11: HUMAN EYE AND THE COLORFUL WORLD