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A convex mirror has radius of curvature of 20 cm. An object is placed at such a distance from the mirror that the size of image is exactly half that of the object. The object must be at :-A. 20 cmB. 30 cmC. 10 cmD. 40 cm |
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Answer» Correct Answer - C f=10 , `m=f/(f-u)` `m=1/2 rArr u=-10` |
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