Task id12089

Two prisms with refractive angles A1=60°, A2=30° are glued together as shown in Figure 14.2 (angle C=90°). The refractive indices of prisms are expressed by the ratios: n1=a1+b1/l2, n2=a2+b2/l2 where a1=1.1 nm2, b1=105 nm2, a2=1.3 nm2, b2=5•104 nm2. Complete the following tasks and answer the questions: 1. Determine the wavelength l0 of the radiation incident on the system of prisms if the wave propagates without refraction at the AC boundary at any angle of incidence on the AD face. Also determine the values of the refractive indices n1 and n2 for this wavelength. 2. Draw the path of rays in the system of prisms for three different wavelengths Lcr > l0, l0, Lф < l0, if the angle of incidence for all three waves on the face AD is the same. 3. Determine the angle of least deviation by the system of prisms of light with wavelength l0. 4. Determine the wavelength of radiation incident on the prism system parallel to the base DC and emerging from it also parallel to the base DC.