A treasure chest in a pond (do not assume water!)appears to be 2 m from the
surface. When you dive under the surface you find that the chest is really 2.5 m
below the surface. What is the index of refraction of the fluid?
Real depth = 2.5 m
Apparent depth = 2 m
Refractive index of fluid = Real depth/Apparent depth
Refractive index of fluid = 2.5/2
Refractive index of fluid = 1.25
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