Class 10 Science Chapter 10 The Human Eye and The Colourful World Notes [Handwritten Notes PDF]
The Human Eye and The Colourful World is a fascinating chapter in Class 10 Science that explains the structure and functioning of the human eye, defects of vision and their correction, and natural phenomena caused by the refraction, scattering, and dispersion of light.
Here, we provide the Handwritten Notes PDF for Chapter 10, which includes neat labelled diagrams of the human eye, ray diagrams for vision defects, and explanations of atmospheric phenomena like the rainbow, twinkling of stars, and scattering of light.
For more Class 10 handwritten notes, visit Study Inertia.
Table of Contents
Highlights of the Notes
- Neat handwritten notes with diagrams of the human eye.
- Explanation of defects of vision and their correction with ray diagrams.
- Simple summary of atmospheric phenomena like rainbow, scattering, twinkling.
- Quick revision points for exams.
- NCERT-based notes covering all important topics.
Topics Covered
- The Human Eye
- Structure and working of the human eye
- Persistence of vision
- Power of accommodation
- Defects of Vision and Their Correction
- Myopia (Near-sightedness)
- Hypermetropia (Far-sightedness)
- Presbyopia
- Correction using suitable lenses
- Atmospheric Refraction and Phenomena
- Twinkling of stars
- Why planets don’t twinkle
- Advanced sunrise and delayed sunset
- Dispersion and Scattering of Light
- Rainbow formation
- Tyndall effect
- Colour of the sky (blue)
- Red colour of the sun at sunrise and sunset
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FAQs
1. What is the function of the iris? The iris controls the size of the pupil and regulates the amount of light entering the eye.
2. What causes myopia? Myopia is caused when the eye lens focuses the image of distant objects in front of the retina; corrected using a concave lens.
3. Why do stars twinkle? Stars twinkle due to atmospheric refraction of starlight as it passes through varying air densities.
4. Why is the sky blue? The sky appears blue due to scattering of shorter wavelengths (blue light) by air molecules.
5. Why is the sun red at sunrise and sunset? At sunrise and sunset, the light travels a longer path through the atmosphere, scattering away shorter wavelengths, leaving red light to reach our eyes.