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  9. Q252

RRB Group D (Level-1 posts) 2022 · Question 252 of 598

A student focuses a sharp image of the sun using a spherical mirror on a sheet of paper, which starts to burn after some time. Which of the following statement/statements about the mirror is/are correct? (a) It is a concave spherical mirror (b) It has a positive focal length (c) It is a converging mirror

  1. ABoth (b) and (c)
  2. BBoth (a) and (c)Correct
  3. CBoth (a) and (b)
  4. D(a), (b), and (c)

Answer: B. Both (a) and (c)

Explanation

A concave mirror focuses parallel light rays to a single point, making it a converging mirror and causing the paper to burn. It has a positive focal length as well.

Source: RRB Group D 2022 Prev. Yr. Paper (17 Aug 2022) (Shift 3) - Prepp · reliable-secondary

← Q251View full paper (598 questions)Q253 →

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