Class 8 Science Light Exam Notes

Read and download free pdf of Class 8 Science Light Exam Notes. Students and teachers of Class 8 Science can get free advanced study material, revision notes, sure shot questions and answers for Class 8 Science prepared as per the latest syllabus and examination guidelines in your school. Standard 8 students should download this study material which will give them more knowledge for all chapters in Science and all important topics which are scoring and can get you more marks. Students should also download free pdf of Chapter wise Notes for Class 8 Science prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this year and also download free worksheets and question papers available here to get higher scores in school exams and tests, also click here for more Study Material for Class 8 Science

Class 8 Science Light Exam Notes. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.

Covers the following topics:

1.Sources of light

2.Medium of light

3.Reflection of light

4.Laws of reflection & nature of image

5.Regular & diffused reflection

6.Characteristics of the image formed by plane mirror

7.Multiple reflection

8.Reflection from spherical mirror

9.Rule of Image formation by spherical mirror

10.Refraction of light

11.Spherical lens

12.Rules of Image formation by spherical lens

13.Total internal reflection

14.Dispersion of white light by a glass prism

15.Human eye

16.Defects of vision, symptoms and remedy (correction)

17.Refraction in nature

18.Scattering of light


1.Light is a form of energy, (optical energy) which helps us in seeing objects by its presence.

2.Light is an electromagnetic wave & travels in a straight line with the speed 3 × 108 m/s in vacuum & changes when it travels from one medium to another.

3.The wavelength (λ) of light changes when it goes from one medium to another.

4.The frequency (f) of the light wave remains the same in all media.

5.Light gets reflected back from polished surfaces, such as mirrors, polished metal surfaces, etc.

6.Light undergoes refraction (bending) when it travels from one transparent medium to another.

Source Of Light

The objects which emit (give) light are called luminous objects. It may be natural or man-made. Sun is a natural source of light and electric lamp, and oil lamp, etc. are man-made source of light.          

In the following videos we have explained you about the concept of Light and its properties. Watch this video to understand the concepts and also post your questions and comments in the comments section

Part 1

Part 2


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