In a double-slit experiment to determine an unknown wavelength of light, the measured total distance between 16 maxima (8 on each side of the central maximum) is 16.8 cm. The screen is located 3.45 m from the double slits, whose centers are 0.21 mm apart.
(a) What is the wavelength of the light?
b) In a classic Young double-slit experiment, the net intensity is 1/4 of the individual source intensities at an angle of 27° off the central axis. There are no minima between this point and the central maximum. The source separation is 485 nm. What is the wavelength of the (monochromatic) light?