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An image of an object obtained by a convex mirror is n times smaller than the object. If the focal length of lens is f, the object distance would be _______ . (A) f/n (B) f/(n-1) (C) (n — 1)f (D) nf

Answer»

(1-n)fExplanation:Given, the image of an OBJECT OBTAINED by a convex MIRROR is n times smaller than the object and the focal length of the mirror is f.Assuming, = height of the image. = height of the object. Therefore, .The MAGNIFICATION of the mirror is given byThe magnification of the mirror is also DEFINED in terms of object distance and image distance from the mirror asAccording to the mirror equation,.Putting the value of ,



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