Since A/L examination is starting in few days I thought of writing a quick post about something related to A/Ls. I will be explaining Doppler Effect and how to do calculations using formulas easily. This was taught to me by my Physics teacher in school who also happened to be my class teacher. Literally she is the best Physics teacher I had in my life and I didn't even need tuition classes for Physics. (She insisted me on practicing more problems so I went to a Physics class where the teacher focused more on questions than theory.) But I learned all the theories and how to apply them from her. So today I'm gonna share with you one of her lessons. It will get you full marks on your Doppler effect question in paper.