Two bursts of light of the same wavelength are emitted simultaneously in parallel beams. Beam 1 passes through 1.6 m of material with index of refraction 1.8 while beam 2 passes through a material of index of refraction 2.3. What is the length of the second material so that both beams emerge from their respective materials at the same time?
(1) 1.25 m
(2) 2.04 m
(3) 1.60 m
(4) 2.59 m
(5) 1.30 m
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