Question

Different manufacturers produce optic fibers of different diameters, as indicated in a table below. the Fiber is placed between two pieces of optically flat glass of width 20 cm, creating a wedge with an opening equal to the diameter of the fiber. The fiber is at one side o the glass width, with the two pieces of glass touching at the other side. the Wedge is exposed to the light of wavelength 590 nm. when the light shines straight down on the wedge and 19 visible fringes were observed. which fiber could this be?

a). 5.10 -5.25 mu*m

b). 5.30- 5.50 mu*m

c) 5.60- 5.90 mu*m

d). 6.00- 6.25 mu*m

Answer 1