Physics

Physics

Problem

The speeds of light in four transparent media are: P: 2.00×108 m s−12.00\times10^{8}\,\text{m s}^{-1} Q: 2.25×108 m s−12.25\times10^{8}\,\text{m s}^{-1} R: 1.80×108 m s−11.80\times10^{8}\,\text{m s}^{-1} S: 2.50×108 m s−12.50\times10^{8}\,\text{m s}^{-1} Which of the following lists the media in order of increasing optical density (least dense first)? a) R, P, Q, S b) Q, S, P, R c) S, Q, P, R d) S, P, Q, R

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