Light

This topic highlights the fact that along with the eyes, light is also necessary for visualizing the objects. It describes that the light that has been emitted or reflected by an object enters our eye and is responsible for making things visible.

This topic describes the laws of reflection. It explains incident ray, reflected ray, angle of incidence and reflection to understand the laws of reflection clearly. The laws are explained by the activities.

This topic describes regular and diffused reflection. When parallel rays reflected from an irregular surface, the reflection is called diffused reflection. On the other hand, reflection from a smooth surface is called regular reflection.

This topic describes multiple images. When two plane mirrors are used in combinations, then multiple images are formed. This idea is used in kaleidoscope to make numerous beautiful patterns.

This topic explains how reflection from the two mirrors enables us to see objects which are not visible directly. It also discusses the use of periscopes.

In this topic, we will learn about the nature of sunlight. It discusses the concept of VIBGYOR in detail by discussing its wavelength and frequency. We will also get to know that white light is composed of seven colours.

In this topic, we will study the defects in the eye including myopia, hypermetropia and presbyopia. It also discusses the treatments for the defects of the eyes.

This topic guides us to take care of our eyes with precautive measures. We will study the following guidelines for the care of eyes with its necessity.

In this topic, we will get to know about the braille system with the illustrations. It also mentions the process and significance of braille system.