Equivalent optical path, Optical path, light, path difference, interference

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A distance ‘d’ traversed by light in a medium of refractive index ‘μ’ has its equivalent optical path ‘μd’ Please consider supporting me at www.Patreon.com/santoshsasane. Please consider supporting me at www.Patreon.com/santoshsasane. JEE, NEET, CET, IIT, Preparation, Physics, JEE Physics, NEET Physics, CET Physics, JEE advanced, IIT Entrance Test, Medical entrance