A convex thin lens with refractive index of 1.50 has a focal length of 30 cm in air . When immersed in a certain transparent liquid , it becomes a negative lens with a focal length of 188 cm . Determine the refractive index of the liquid .
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A convex thin lens with refractive index of 1.50 has a focal length of 30 cm in air . When immersed in a certain transparent liquid , it becomes a negative lens with a focal length of 188 cm . Determine the refractive index of the liquid .
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