a convex lens forms a real image of a point object placed on its principal axis .if the upper half of the lens is painted black image will not be shifted why?
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convex lens forms a real image of a point object placed on its principal axis. If the upper half of the lens is painted black,
(a) the image will be shifted downward
(b) the image will be shifted upward
(c) the image will not be shifted
(d) the intensity of the image will decrease
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