[" The radius of curvature of comex surf...

[" The radius of curvature of comex surface of a thin plano-comer lens is "],[15cm" and refractive index of its material is "1.6" .The power of the lens "],[" will be "],[[" (a) "+1D," (b) "-2D],[" (c) "+3D," (d) "+4D]]

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[" The radius of curvature of comex surface of a thin plano-comer lens is "],[15cm" and refractive index of its material is "1.6" .The power of the lens "],[" will be "],[[" (a) "+1D," (b) "-2D],[" (c) "+3D," (d) "+4D]]

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