a convex lens is combined with concave lens , draw the ray diagram to show the image formed by the combination , for an object placed in between f and 2f of the convex lens
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Pick a point on the top of the object and draw three incident rays traveling towards the lens. Using a straight edge, accurately draw one ray so that it passes exactly through the focal point on the way to the lens. Draw the second ray such that it travels exactly parallel to the principal axis.
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