OCR A 2021 AS Paper 1 - AS-level Physics Past Paper

http://scienceshorts.net ------------------------------------------- Paper: https://www.ocr.org.uk/Images/667483-... Mark scheme: https://www.ocr.org.uk/Images/667487-... ------------------------------------------- 0:00 Multiple choise 19:04 Q21 - Momentum of trolley on lorry 22:05 Q22 - Uncertainties 25:00 Q23 - LED threshold voltage experiment 31:30 Q24 - Wavelengths emitted by stars 35:21 Q25 - Refraction & Young's double slit 39:38 Q26 - Moments & density - ---------------------------------------------------------------------- I don't charge anyone to watch my videos, so please donate if you can to keep me going! https://bit.ly/scienceshortsdonate