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NCERT Solutions Class 10 Science - Chapter 10 The Human Eye and Colourful World - PDF Download

JEE Mains & Advanced

NCERT solutions for class 10 science chapter 10 The Human Eye and Colourful World may be beneficial to students in achieving a high score in their board examinations. Each answer to human eye Class 10 questions is presented in a structured manner, thus eliminating any room for questions or doubts. Examining solutions may help students to understand the concepts associated with Chapter 10.

The human eye is made up of fine structures. The reason for the colour of sun at sunrise and sunset is explained in NCERT class 10 science chapter 10. It explains the concept of the eye. NCERT solutions describes various defects that occur in the human eye such as refractive defect of vision (hypermetropia), myopia, presbyopia, etc.

Chapter 10 covers the various elements of the human eyes, including their properties and functions. Students can practice human eye diagrams and visual abnormalities and repair them with NCERT solutions.

Chapter 10 covers the many elements of human eyes, including its properties and functions of cornea, Pupil, Optical nerve, Iris, Eye lens, Ciliary muscles etc. It also covers the various aspects of light scattering and how it works and also help students understand how different colours of light travel through a prism and why different angles of light bend.

NCERT Solutions for Class 10 Science Chapter 10 Topics

Section Name

Topic Name


The Human Eye and the Colourful World


The Human Eye


Defects of Vision and Their Correction


Refraction of Light Through a Prism


Dispersion of White Light by a Glass Prism


Atmospheric Refraction


Scattering of Light

10.1 The Human Eye: One of the most important and sensitive sense organs is the human eye. It helps us see the beautiful world around us and the colours in it. When we close our eyes, we can see some of the things around us by their smell, taste, sound or touch. But we can't see colours when we close our eyes. So, of all the senses, the human eye is the most important.

Subtopics covered in the section 10.1 The Human Eye:

10.1.1 Power of Accomodation

10.2 Defects of Vision and Their Correction: Refractive errors happen when the shape of your eye makes it hard for light to get through to your retina. This can cause your vision to be blurry or distorted. There are a few different types of refractive error, each with different features and ways to fix them.

10.3 Refraction of Light Through a Prism: When light goes through a prism it undergoes a process called refraction. Refraction is the bending that light undergoes as it passes through another medium. 

10.4 Dispersion of White Light by a Glass Prism: The refraction of white light through a glass prism is one of the fundamental optical phenomena that determines the colors of light. White light entering a glass prism undergoes the process of refraction and is broken down into its component colors due to the different wavelengths having different levels of refraction.

10.5 Atmospheric Refraction: The bending of light across the surface of the Earth's atmosphere is known as atmospheric refraction. This effect is responsible for a variety of optical phenomena observed, particularly at sunrise and sunset and when viewing celestial bodies close to the horizon.

10.6 Scattering of Light: The scattering of light occurs when light hits particles or objects along its path, causing it to travel in different directions. This scattering is responsible for a variety of optical effects and for the natural phenomena we see in the environment around us.

Subtopics covered in the section 10.6 Scattering of Light:

10.6.1 Tyndall Effect

10.6.2 Why is the colour of the sky blue?

Key Features of Class 10 Science Chapter 10

  • The eye can focus on both close and far objects by adjusting its focal length, which is called accommodation. 

  • The smallest distance it can see something clearly without strain is called the "near point" or the "least distance" of distinct vision, which is around 25 cm for a young adult with normal vision. Unfortunately, as we get older, the power of accommodation starts to fade.

  • Common vision defects include short-sightedness (when the image of a distant object is focused before the retina) and myopia. 

  • Our eyes have a special feature that enables us to see colors in the world around us. This feature is called the retina. The retina is made up of three different types of cone cells. Each type of cone is sensitive to different colors. The primary colors of light are red, green and blue. 

  • When light enters your eye and stimulates your cone cells, it sends signals to your brain. Your brain then interprets these signals from different types of cones to see different colors.

  • Hypermetropia is when the image of a nearby object is focused beyond the retina, and this can be corrected with a convex or convex lens. Finally, dispersion is when white light is split into its component colors, which is what causes the blue color of the sky.

Benefits of Downloading the PDF of NCERT Solutions Class 10 Science Chapter 10 The Human Eye and Colourful World

Downloading free pdf of NCERT solutions for class 10 science chapter 10 “The human eye and the colourful world” by eSaral can help students studying this topic in several ways.

Here are some benefits of using NCERT solutions:

Accurate solutions: The NCERT solutions are prepared by subject experts and are in line with the syllabus prescribed by cbse.

Efficient solutions: These solutions provide efficient solutions to problems, which helps students in managing their time during the exams.

Step-by-step Explanation: Each question and concept in this chapter is explained step by step. This helps students in understanding the subject better.

Confidence Building: Students can become more confident when answering questions related to the human eye and the coloured world by practicing using these solutions.

Self-assessment: The solutions can also be used for self-assessment. Students can try the questions and then compare their answers to the solutions. This way, they can see their strengths and areas where they need to improve.

Revision tool: The PDF of the NCERT Solutions can also be used as a revision tool. When revising the chapter prior to exams or tests, students can review the solutions.

Frequently Asked Questions

Question 1: What is human eye’s main function?

Answer 1: The human eye is responsible for the detection of light and the processing of that information into visual representations that the brain interprets as images. This is an essential component of visual perception and the perception of the environment.

Question 2: What is the Tyndall effect?

Answer 2: Tyndall effect is a scattering of light in a transparent medium caused by the scattering of light particles or molecules. It is responsible for phenomena such as the blue sky or the visibility of light rays in dusty air.