13. LIGHT
The chapter explores the properties of light, specifically its reflection and the formation of images by mirrors. It explains the laws of reflection, types of reflection, and the structure of the human eye, emphasizing the importance of vision. Additionally, it addresses the challenges faced by visually impaired individuals and introduces the Braille system as a means for reading and writing.
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What we have learnt
- Light is reflected from all surfaces.
- Regular reflection occurs on smooth surfaces, while diffused reflection occurs on rough surfaces.
- The angle of incidence equals the angle of reflection.
- Images formed by a plane mirror undergo lateral inversion.
- Sunlight consists of seven colors, and its splitting into colors is known as dispersion.
- The human eye comprises several parts including the cornea, iris, pupil, lens, retina, and optic nerve.
- Visually impaired persons can read Braille and develop their other senses to interact with their environment.
Key Concepts
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