P K M SPH4U Name: 4. Light rays with a wavelength of 350 nm perpendicularly strike two flat glass surface separated by an air payer. Use a diagram to support your reasoning in both of the following questions. (nair = 1.003, nglass = 1.52) a) Calculate the thickness of the air layer needed to make the glass appear bright when the light is reflected. Use a diagram to support your answer. 1= 350 nm b) Calculate the thickness of the air layer needed to make the glass appear opaque (dark) when the light is reflected. Use a diagram to support your answer. c) If these two glass are separated at one end by a piece of paper with the thickness of 0.012 cm. An air wedge 6.0 cm long is formed. When the air wedges is illuminated with light, interference fringes appears. Between the centres of the first and eight dark bands is 2.4 mm. Determine the wavelength of the light. Use a diagram to support your