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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 27 - Wave Optics > To produce a minimum reflection of wavelength near the middle of visible spectrum (550 nm), how thick should a coating of MgF2(μ=1.38) be vacuum-coated on a glass surface?

To produce a minimum reflection of wavelength near the middle of visible spectrum (550 nm), how thick should a coating of MgF2(μ=1.38) be vacuum-coated on a glass surface?

how thick should a coating of MgF2(μ=1.38) be vacuum-coated on a glass surface? To produce a minimum reflection of wavelength near the middle of visible spectrum (550 nm)