Physics tutorial for Grade 9 students, cover material required for Brevet (Lebanese educational system) ,Information explained in Arabic and English,

if power point needed, feel free to ask
Brainhub.lebanon@outlook.com

Chapter 1 lenses ,
objective:
1- thin lens definition
2-optical instruments
3-how to make an image
optical center, optical axis, object and image focus,
4- image characteristics
5-Differences between optical instruments

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