What is Light?
Light is an electromagnetic wave that can be visible to humans and help humans to see the object. We can also define Light as a form of energy that helps us to see. Light Wave contains a minute packet of energy particles called photons. As sound requires mediums like solid, liquid, and gas to travel through but light does not require any medium to travel. The speed of light is 3×108 m/s.
Propagation of Light
Light always propagates in a straight line. Since light is an electromagnetic wave it can propagate even without a medium i.e. Light can propagate in vacuum also. Light is also a transverse wave, hence, it propagates in the manner of crest and trough. Light being an electromagnetic wave has both electric field and magnetic field components which oscillate perpendicular to each other and they both oscillate together perpendicular to the direction of propagation.
NCERT Notes for Class 10 Physics Chapter 10 Light-Reflection and Refraction
Class 10 Physics Chapter 10 Light-Reflection and Refraction is one of the most important chapters to learn. In this article, we will learn about reflection, types of reflection, refraction, images formed by spherical, spherical lenses, and different types of lenses and mirrors, magnification, Power of lens, and light passing through a prism. This article is designed to provide students with a comprehensive summary of the entire class 10 NCERT Chapter 10 Notes and include all of the essential topics, formulas, and concepts necessary for success on exams.
Table of Content
- What is Light?
- Reflection of Light
- Mirror Formula
- Refraction of light
- Lens Formula
- Power of Lens