This is a A lecture PDF handout, This lecture was condcuted on Tuesday 25th Sept. 2018
Please, download the handout at the following link;
https://drive.google.com/file/d/1aq57BCw_LtxIRHRFHhSRTPsvBoQtD4VY/view?usp=sharing
You can watch/download a video demonsterating process of refraction at the following link;