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  9. Q509

RRB Group D (Level-1 posts) 2022 · Question 509 of 598

The magnification 'm' produced by a convex lens when the object is placed at a distance 2f from the lens is given by:

  1. Am = +1
  2. Bm = -1Correct
  3. Cm = -2
  4. Dm = +2

Answer: B. m = -1

Explanation

When an object is placed at a distance equal to twice the focal length (2f) from a convex lens, the image is inverted and the magnification is -1.

Source: RRB Group D 2022 Prev. Yr. Paper (22 Aug 2022) (Shift 1) - FreshersNow · reliable-secondary

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