A point object is kept at the first focus of a convex lens.If the lens start moving towards right with a constant velocity then in which direction will the image move?
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It is a fixed point on the principal axis such that the light rays incident parallel to the principal axis, after refraction through the lens, either converge to this point (in convex lens) or appear to diverge from this point (in concave lens). It is denoted by F3
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Answer: The image will first move towards left and then towards right.
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