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Q71 (NDA-II/2018) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Geometrical optics Answer Verified

An object is placed in front of a convex mirror. Which one of the following statements is correct?

Result
Your answer: —  Â·  Correct: A
Explanation

A convex mirror is a diverging mirror that always forms a virtual, erect, and diminished image of a real object, regardless of the object's position [3]. Because the image is always erect, it will never form an inverted image [3]. According to the mirror formula and ray diagrams, as an object moves closer to the mirror, the image moves from the focus towards the pole, not towards the focus [2]. Furthermore, the magnification of a convex mirror is always less than one, meaning the image is always smaller than the object; thus, it cannot be enlarged even if placed at half the focal length [3]. Since the reflected rays only appear to originate from a point behind the mirror, the image is strictly virtual and cannot be real or inverted [3].

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 10: Light: Mirrors and Lenses > Activity 10.3: Let us explore > p. 156
  2. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 10: Light: Mirrors and Lenses > Snapshots > p. 165
  3. [2] Science , class X (NCERT 2025 ed.) > Chapter 9: Light – Reflection and Refraction > Activity 9.5 > p. 141
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