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A great video lecture conducted by experienced physics teacher on 10th class physics chapter 12 topic12.1 refraction of lights. Get full understanding or ask any questions.

Refraction of Lights, ch 12, lec 12.4, Refraction of Lights - 10th Class Physics

9:40

Laws of Refraction, ch 12, lec 12.4, Refraction of Lights - 10th Class Physics

6:20

Speed of Light Medium Refractive Index, ch 12, lec 12.4, Refraction of Lights - 10th Class Physics

9:29