I. In an interference experiment, blue light with a wavelength 01'4\"?!) nm passes through a double slit. On a screen 1.4 m away, the distance between the 2ml and 4* bright bands is 0.35 cm. a) What was the separation of the slits? (2 marks-T) b} What would the spacing be, between adjacent dark fringes, if the red light of wavelengl 6.3 x]0"m was used? {2 marks-T)