The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is :
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The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is : The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive [...]