Two thin symmetrical lenses of different nature have equal radii of curvature of all faces R = 20 cm. The lenses are put close together and immersed in water. The focal length of the system is 24 cm. The difference between refractive indices of the lenses is (5n). Find n. The refractive index of water is 43. ___

Two thin symmetrical lenses of different nature have equal radii of cu

1.	Two thin symmetrical lenses of different nature have equal radii of curvature of all faces R = 20 cm. The lenses are put close together and immersed in water. The focal length of the system is 24 cm. The difference between refractive indices of the lenses is (5n). Find n. The refractive index of water is 43. ___
Answer» Two thin symmetrical lenses of different nature have equal radii of curvature of all faces R = 20 cm. The lenses are put close together and immersed in water. The focal length of the system is 24 cm. The difference between refractive indices of the lenses is $(\frac{5}{n})$ . Find n. The refractive index of water is $\frac{4}{3}$ . ___

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