a laser with wavelength d/8 is shining light on a double slit with slit separation 0.300 mm . this results in an interference pattern on a screen a distance l away from the slits. we wish to shine a second laser, with a different wavelength, through the same slits. part a part complete what is the wavelength λ2 of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser, if d