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An insect is embedded in a spherical fluorite crystal with a radius
of 7.50 cm and a refractive index of 1.43. If the insect appears to be 1.50 cm into the crystal when
viewed in air, what is its actual distance from the interface?
А. 1.11 сm
С. 1.98 сm
В. 1.50 сm
D. 2.35 cm

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