A real image is formed by a convex lens. If we put a concave
lens in contact with it, the combination again forms a real
image. The new image
(a) is closer to the lens system.
(b) is farther form the lens system.
(c) is at the original position.
(d) may be anywhere depending on the focal length of
the concave lens.
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A real image is formed by a convex lens. If we put a concave lens in contact with it, the combination again forms a real image. The new image can be situated in anywhere,it mainly depends on the focal length of the concave lens.
According to the mathematical laws,we have to use the focal lengths in order to calculate the position of the formed image.
If the concave and convex lens both have same focal length the image will be situated in the infinite position.
If the focal length of the concave lens is greater than the convex lens the formed image will be closer.
And if the focal length of a concave lens is lesser than the formed image will be situated in a far place.
That's why the correct answer of this question is option D.
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