A magnified virtual image can be formed by both a convex lens and a concave mirror under specific conditions.
Step 1: Convex lens.
A convex lens can form a magnified virtual image when the object is placed between the focal point and the lens. In this case, the image formed is virtual, upright, and magnified.
Step 2: Concave mirror.
A concave mirror can also form a magnified virtual image when the object is placed between the focal point and the mirror. This results in a virtual, upright, and magnified image.
Step 3: Convex mirror.
A convex mirror always forms a diminished virtual image, regardless of the object’s position. Therefore, a convex mirror cannot form a magnified virtual image.
Step 4: Conclusion.
Thus, the magnified virtual image can be formed by both a convex lens and a concave mirror, but not by a convex mirror. The correct answer is (D).