4. Based on the data in the graph provided, which value is closest to the index of refraction of (1 point) quartz for extreme Violet light of

Please help with my physics homework! Any help would be appreciated. Thank you so much!

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4. Based on the data in the graph provided, which value is closest to the index of refraction of (1 point)quartz for extreme Violet light of wavelength 400 um? lndex of refraction (n)1.7 L6 1.5 1.4400 500 600 700 Wavelength In vacuum (nm) 01.5301.5601.6701.44 5. Crown glass has an index of refraction of 1.52. When light passes through the glass, at which (1 point)angle to the normal will it be refracted along the surface of the glass-air boundary? 031.3°059.2°065,8o041.1° 6. Abeam of white light in air strikes a sheet of silicate flint glass at an angle of 6510‘2 with the (1 point)normal. What is the angle of dispersion in the glass between extreme red light (11 = 1.62) andextreme violet light (in = 1.67)? 012°011°015°02.40