A lens with an index of refraction of 1.60 is to be coated with a material (n = 1.40) that will make the lens nonreflecting for yellow-orange (λ = 515nm) light normally incident on the lens. What is the minimum required thickness of the coating?
Answer to relevant QuestionsMagnesium fluoride (n = 1.38) is frequently used as a lens coating to make nonreflecting lenses. What is the difference in the minimum film thickness required for maximum transmission of blue light (λ = 400 nm)and of red ...Two parallel plates are separated by a small distance as illustrated in Fig. 24.29. If the top plate is illuminated with light from a He– Ne laser (λ = 632.8nm), for what minimum separation distances will the light be ...Two parallel slits 0.075 mm apart are illuminated with monochromatic light of wavelength 480 nm. Find the angle between the center of the central maximum and the center of the first side maximum. A certain crystal gives a deflection angle of 25o for the first-order maximum of monochromatic X-rays with a frequency of 5.0 x 1017 Hz. What is the lattice spacing of the crystal? Show that for a diffraction grating, the violet (λ = 400 nm) portion of the third-order maximum over-laps the yellow-orange (λ = 600 nm) portion of the second-order maximum, regardless of the grating’s spacing.
Post your question