To Determine the Wavelength of Various Lines in the Spectrum of Mercury Vapor Lamp using Diffraction Grating

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The Most Important Viva questions related to Diffraction Grating – https://www.youtube.com/watch?v=q_DGonJ8D6s

The Viva Questions related to the Optical Instruments – https://www.youtube.com/watch?v=YrvTVwdy_uE

The Viva Questions related to the Theory of Optics – https://www.youtube.com/watch?v=cKEbR4yJkDI