Light speed in a medium is measured as 2×108 m/s. What if the index of refraction for the medium? What is the apparent depth of a fish with real depth of 9 meters in the medium?

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Answer 1 · 2018-04-07T02:11:49

#μ = 1.5# and #"d"_"app" = "6 m"#

Refractive index #(μ)#: the ratio of the velocity of light in a vacuum to its velocity in a specified medium.

#μ = c/v#

#μ = (3 × cancel(10^8\ "m/s"))/(2 × cancel(10^8\ "m/s")) = 3/2 = 1.5#

Fish in the medium

$https://www.slideshare.net/mobile/hmsoh/unit-122-refraction-of-light$

#μ = "Real depth"/"Apparent depth"#

#"Apparent depth" = "Real depth"/mu = "9 m"/ (1.5) = "6 m"#