Solution to task 507 from Chertov´s for extramural stud

Solution to task 507 from Chertov´s for extramural stud

507. A normally parallel light beam with a wavelength λ = 500 nm is incident on a thin glass wedge. The distance between adjacent dark interference fringes in reflected light b = 0.5 mm. Determine the angle α between the surfaces of the wedge. The refractive index of the glass from which the wedge is made is n = 1.6.