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✅ Corrected exercise on Snell Descartes' law studied in 2nd general at the same time as the refraction and reflection of light. This exercise also deals with the optical index n which allows us to calculate the speed of light in the medium considered Refraction of light in second general 🔗 Find other videos and methodological sheets to download for free: https://eprofs.fr Twitter: / e_profs Instagram: / e_profs_physique_chimie Facebook: / e-profs-467482426970398 Tiktokt: / eprofs