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[" 29.A converging lens of refractive in...

[" 29.A converging lens of refractive index "1.5" and of "],[" focal length "15cm" in air,has the same radii of "],[" curvature for both sides.If it is immersed in a "],[" liquid of refractive index "1.7" ,find the focal length "],[" of the lens in the liquid."]

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