Question

explain please

*Question 266: Thin Film Two pieces of glass are held together in such way that the air space between them forms a very thin wedge. Light of wavelength 469 nm strikes the upper surface perpendicularly and is reflected from the lower surface of the top glass and the upper surface of the bottom glass, thereby producing a series of interference fringes. How much thicker is the air wedge at the sixteenth fringe than it is at the sixth? Give your answer in metres. Answer: You did not give the correct unit. The correct answer is: 2.35e-6 m

Answer 1

x=469 nm given, - for 16th fringe, Ydist = 152 =) for 6th fringe, 5.2 e SX 469 nm = 2345 nm = 2.35 X lo mi so, 2.35 x 100m thicker. Xdist