Light passes through two media with refractive indices of 1.75 and 1.55, respectively. the thickness of both the media is 30 um. the resultant path difference o

Light passes through two media with refractive indices of 1.75 and 1.55, respectively. The thickness of both the media is 30 um. The resultant path difference of the yellow light component (% = 589 nm) is . (Take T= 3.141) [round off to one decimal places] um.