Light – Reflection & Refraction Class 10|Chapter 9 Science Full Explanation|Part 1

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In this video, we begin Class 10 Science Chapter 9 – Light: Reflection and Refraction (Part 1).
This chapter explains the behaviour of light when it interacts with different surfaces and media, forming the foundation of optics.

In Part 1, we cover the basic nature of light and important phenomena such as reflection, refraction, scattering, dispersion, and diffraction, explained in a simple and conceptual way as per the NCERT syllabus.

📘 Topics Covered in This Video:

🔹 1. Introduction to Light

What is light?

Nature of light (basic idea)

Why light is important for vision

🔹 2. Reflection of Light

Meaning of reflection

Examples from daily life

Laws of reflection (introductory idea)

Regular reflection vs diffused reflection

🔹 3. Refraction of Light

What happens when light passes from one medium to another

Bending of light at the boundary

Causes of refraction

Everyday examples (coin in water, pencil in glass)

🔹 4. Scattering of Light

Meaning of scattering

Why the sky appears blue

Why the sun looks red at sunrise and sunset

Relation with wavelength of light

🔹 5. Dispersion of Light

Splitting of white light into colours

Spectrum of white light

VIBGYOR sequence

Natural example: rainbow

🔹 6. Diffraction of Light (Basic Idea)

Bending of light around obstacles

Why diffraction occurs

Difference between diffraction and scattering (intro level)
🎯 What You Will Learn:

✔ Basic understanding of the nature of light
✔ Difference between reflection and refraction
✔ Conceptual clarity of scattering, dispersion & diffraction
✔ Real-life examples related to light phenomena
✔ NCERT-based foundation for numericals and ray diagrams

📚 Perfect For:

Class 10 CBSE & NCERT Students

Board exam preparation

Students starting the chapter Light – Reflection and Refraction

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