11. A real image of half the size is obtained in a concave
spherical mirror with a radius of curvature of 40 cm. The
distance of the object that of its image will be
(a) 15 cm, 30 cm
(b) 30 cm, 15 cm
(c) 30 cm, 60 cm
(d) 60 cm, 30 cm
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option (d) is correct answer
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