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Class 10 science notes in hindi medium pdf downloadClass 10 science notes in hindi medium pdf download
Download all answers in PDF file format or download Pff apps to downooad all the contents offline without internet. So, 10th Science chapter 10 question answers are useful for UP Board students also. Laws of refraction of light: The refraction of light obeys the following two laws: First law: The incident ray, the refracted ray and normal to the surface of separation at the point of incidence, all lie in the same plane.