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NDA 1 2025 GAT, question 126

Topic: Physics

Q126

An object is placed between infinity and the pole (P) of a convex mirror. The position of the image is

  1. (a) between pole (P) and the focus (F), behind the mirrorCorrect answer
  2. (b) between the focus (F) and infinity, behind the mirror
  3. (c) between the pole (P) and the infinity, in front of the mirror
  4. (d) at the focus (F), behind the mirror

Solution.

Answer: (a) between pole (P) and the focus (F), behind the mirror

  1. For any real object at a finite distance in front of a convex mirror, reflected rays diverge and their backward extensions meet behind the mirror between the pole and focus.
  2. The image is virtual, upright and diminished.
  3. The focus is reached only in the limiting case of an object at infinity.