An object is placed perpendicular to the principal axis of a concave lens of focal length 30 cm at a distance of 20 cm from the lens. Find the position and nature of the image.
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an object is placed perpendicular to the principal axis of a convex lens of focal length 20cm. the distance of the object from the lens is 30cm.
find the 1)position
2)the magnification
3)the nature of the image formed.
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