An object is placed 0.4 m from the convex mirror. A plane mirror ia placed at a distance of 0.3 m from the object. The image formed in the two mirror coincide without parallax. What is the focal length of the convex mirror?
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Answer:0.4
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We can take mirror(plane) opposite side of convex mirror also but answer doesn't match that way..So I think it is correct.
I am also a student don't expect expert answer....
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I think the answer is this
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