A parallel beam of light containing two wavelengths, λ1 = 455 nm and λ2 = 642 nm , enters the silicate flint glass of an equilateral prism as shown in (Figure 1). At what angles, θ1 and θ2 , does each beam leave the prism (give angle with normal to the face)? Use n455nm = 1.64 and n642nm =1.62.