A1) A light of wavelength (460 nm) falls on a pair of slits separated by 0.2mm. i) Calculate the phase difference between a wave impacting the central maximum and another at 0.8 cm from central maximum. The distance between the slits and the screen is 1.2m. Show all results. ii) Calculate the intensity of strip i) with respect to the intensity of the central maximum. Show all results. iii) Calculate the order (m) of the strip in i). Show all results.

An infinitely thick sheet of glass (ng = 1.5) is coated with a 500-nm thick layer of oil (noil = 1.42). a) For what visible wavelengths of light (400 nm-700 nm) do the reflected waves initially incident on the oil layer undergo maximum constructive interference? b) For what visible wavelengths of light (400 nm-700 nm) do the reflected waves initially incident on the oil layer undergo perfect destructive interference? **see image for properly formatted question**

A flat plane wave propagates from free air towards glass material with an angle of incidence of 30°. How much power is reflected and the power transmitted by the glass for waves with a) TE mode b) TM mode. Please solve subparts A and B max 30 minutes thank u