Linear Distance Between Images in Telescope · RMPH 2018 #A3

Physics · optics

Problem

If the focal distance of the telescope's objective is fob=0.40f_{ob} = 0.40 m, derive the linear distance yy between the two images, seen in the focal plane of the objective and calculate its numerical value. [Context: This continues from A2 where two mercury doublet wavelengths (579.1 nm and 577 nm) with refractive indices n=1.60n = 1.60 and n+Δnn + \Delta n where Δn=1.3×10−4\Delta n = 1.3 \times 10^{-4} pass through the rhombic prism and telescope.]

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