Question: In a double-slit experiment, the third-order maximum for light of wavelength 500nm is located 12mm from the central bright spot on a screen 1.5m from the slits. Light of wavelength 660nm is then projected through the same slits.
Part A: How far from the central bright spot will the second-order maximum of this light be located?
I need help to solve the above question and express your answer using two significant figures.