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Q62 (NDA-II/2016) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Geometrical optics Answer Verified

If the image of an object, formed by a concave mirror is virtual, erect and magnified, then the object is placed

Result
Your answer: —  Â·  Correct: D
Explanation

A concave mirror is capable of producing both real and virtual images depending on the object's position. When an object is placed between the pole (P) and the principal focus (F), the reflected rays diverge and do not meet in front of the mirror. Instead, they appear to intersect behind the mirror, resulting in a virtual, erect, and magnified image. This is the only position for a concave mirror where a virtual image is formed. In contrast, placing an object at the principal focus produces a real, inverted image at infinity, while placing it at the centre of curvature results in a real, inverted image of the same size. Beyond the centre of curvature, the image is real, inverted, and diminished. Therefore, for a virtual and magnified image, the object must be between the pole and the focus.

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