Solutions of Light from 1 Explore: A Science Textbook 8
Shobhita Johari Science Solutions from Chapter 15 - Light
Shobhita Johari, Pankaj Tyagi and, Parminder Chopra's 1 Explore: A Science Textbook 8 detailed solutions to all the exercises of Light for 8th CBSE are provided here. The topics covered are such as Eyes, Kaleidoscope and, Reflection Of Light. The points to remember in the Shobhita Johari, Pankaj Tyagi and, Parminder Chopra's Book Solutions is ideal for quick revision.
Practice Other Topics from Light
The topic explains the concept of the reflection of light. Few terms related to the reflection of light, an incident ray, point of incidence, and reflected ray are discussed. We also know about the angle of incidence, and angle of reflection, etc.
The topic discusses the two laws of reflection of light. With the help of activities, we learn how these laws come into effect in practice. One of the activities enlightens us with the plane mirror that we can use to establish the laws of reflection.
The topic sheds light on the characteristics of the image formed by a plane mirror. We identify four features of the image formed. Activity encourages the student to experience and observe the image formed on the plane mirror and relate them.
The topic illustrates a regular reflection. It talks about the objects that create a regular reflection and the characteristics of the image formed by regular reflection. A ray diagram is presented to explain this concept better.
The topic elaborates on irregular or diffused reflection. The examples of objects producing a diffused reflection are given along with the concepts of transmission, absorption, and reflection.
The topic throws light on how we can visualise objects. It explains luminous and non-luminous objects. There is a thorough explanation based on how luminous objects help us see non-luminous objects.
This topic elaborates on the theory of multiple reflections with the help of an example of a hairstylist. The use of multiple reflections found to form multiple images. Students can try and get various images by following the instructions.
The topic discusses a kaleidoscope and its functioning. There is an activity given, which will help students in making a kaleidoscope. Another activity is given for students to try and observe the dispersion of light.
The topic elaborates on the dispersion of white light. A diagram is given to explain the phenomenon through the prism. Here, we understand that the white light splits into seven colours, called the dispersion of white light.
The topic discusses the structure of the human eye. A well-labelled diagram is given for a better understanding of the students. All the parts of the eye are described in detail. The whole mechanism by which we can see is also explained.
The topic calls attention to the blind spot of the eye, a point where the optic nerve joins the retina. It is a no visibility zone. There is an activity given for students to perform and see where the blind spot exists.
The topic introduces us to an amazing concept, that is, the persistence of vision. According to this concept, the human brain is capable of holding an image for some time. It is explained with the examples of a ceiling fan and filmstrip.
The topic sheds light on the vision defects that one can have. A normal eye can see distinctly, near, or far, but an eye with a defect can have specific issues. Two types of vision defects and their causes have been highlighted here.
The topic explains the need for taking care of eyes. It suggests that eyelids, eyebrows, and eyelashes protect the eyes. Some of the measures are given by which we can take care of our eyes. Few foods are also mentioned that are good for vision.
The topic sheds light on the Braille system, a reading and writing method for visually challenged people. We learn how this system works and about Braille writer machines. Few symbols and words based on the Braille system are included here.
