An object is placed between a plane mirr...

An object is placed between a plane mirror and a convex mirror as shown, Let `I_1 and I_2` be the images formed by the plane mirror and the convex mirror respectively. It is found that distance between `I_1 and I_2` is 100 cm, distance between the object and `I_2` is 60 cm and has magnification 1/2. Find focal length of the convex mirror and also the distance between the two mirrors.

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40 cm, 60 cm

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