Access the official NCERT Class 10 Science textbook for Chapter 10 – The Human Eye and the Colourful World PDF. This chapter explains the structure and functioning of the human eye, the power of accommodation, common vision defects and their corrections (myopia, hypermetropia, presbyopia), and fascinating optical phenomena like dispersion, atmospheric refraction (twinkling of stars, advanced sunrise, delayed sunset), scattering of light (sky’s blue color and red sunsets), with practical examples like prisms and rainbows.
Chapter Highlights:
- Structure & Functioning of the Human Eye: Cornea, Iris, Lens, Retina, Pupil, Ciliary Muscles, Optic Nerve
- Power of Accommodation: Adjusting lens curvature for near and distant vision
- Defects of Vision & Correction: Myopia, Hypermetropia, Presbyopia (with lenses)
- Refraction Phenomena: Prism dispersion, rainbow formation
- Atmospheric Refraction: Twinkling of stars, advanced sunrise/delayed sunset, why planets don’t twinkle
- Scattering of Light: Tyndall effect, blue sky, red sun at sunrise/sunset