Class 10 Science — Chapter 10: The Human Eye and the Colourful World

What you'll learn

• ▸Structure and Function of the Human Eye
• ▸Power of Accommodation
• ▸Myopia (Near-sightedness): Causes and Correction
• ▸Hypermetropia (Far-sightedness): Causes and Correction
• ▸Presbyopia
• ▸Refraction of Light through a Prism
• ▸Cataract

Chapter Summary

--- PAGE 1 --- CHAPTER 10 The Human Eye and the Colourful World 1064CH11 You have studied in the previous chapter about refraction of light by lenses. You also studied the nature, position and relative size of images formed by lenses. How can these ideas help us in the study of the human eye? The human eye uses light and enables us to see objects around us. It has a lens in its structure. What is the function of the lens in a human eye? How do the lenses used in spectacles correct defects of vision? Let us consider these questions in this chapter. We have learnt in the previous chapter about light and some of its properties. In this chapter, we shall use these ideas to study some of the optical phenomena in nature. We shall also discuss about rainbow formation, splitting of white light and blue colour of the sky. 10.1 THE HUMAN EYE The human eye is one of the most valuable and sensitive sense organs. It enables us to see the wonderful world and the colours around us. On closing the …

Practice Questions from this Chapter

Tap "Get Solution" on any question to ask our AI tutor.

1. Explain eye accommodation simply. Get Solution →
2. Describe common vision defects. Get Solution →
3. How do corrective lenses work? Get Solution →
4. What is the light-sensitive screen at the back of the human eye where an image is formed? Get Solution →
5. Which part of the eye is a dark muscular diaphragm that controls the size of the pupil? Get Solution →
6. What is the near point, or the least distance of distinct vision, for a young adult with normal vision? Get Solution →
7. What is the condition called when the crystalline lens of people at old age becomes milky and cloudy? Get Solution →
8. Which type of corrective lens is used to fix myopia (near-sightedness)? Get Solution →

Did you know?

• 💡 Our brain flips the upside-down image formed on the retina to see correctly.
• 💡 Your eyes blink up to 20 times a minute to keep them moist and clean.
• 💡 Newborn babies produce tears but cannot actually shed them until they are a few weeks old.
• 💡 Benjamin Franklin invented bifocal lenses to correct both near and distant vision problems.
• 💡 The human eye can distinguish approximately 10 million different shades of color.

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