Figure 35.25 shows an interferometer known as Fresnel's biprism. The magnitude of the prism angle A is

Question:

Figure 35.25 shows an interferometer known as Fresnel's biprism. The magnitude of the prism angle A is extremely small.(a) If S0 is a very narrow source slit, show that the separation of the two virtual coherent sources S1, and S2 is given by d = 2aA (n ?? 1), where n is the index of refraction of the material of the prism.(b) Calculate the spacing of the fringes of green light with wavelength 500 nm on a screen 2.00 m from the biprism. Take a = 0.200 m, A = 3.50mrad, and n =1.50.