Spherical refracting surfaces. When an object is placed 15 cm in front of a spherical refracting surface the image distance is -12 cm. The index of refraction of the refracting material is 3.4 and it is embedded in transparent material with index of refraction 2.2. Find (a) the radius of curvature r of the surface (including the sign) and determine whether the image is (b) real or virtual and (c) on the same side of the surface as object O or on the opposite side. (a) (b) (c) n1 n2 R/V Side 2.2 3.4 +15 -12 (a) Number i Units (Ь) (c)

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