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RRB Junior Engineer / DMS / CMA 2019 · Question 1806 of 3719

If both object distance 'u' and image distance 'v' from a concave mirror is -20 cm and both object size and image size is 4 cm, then what is the radius of curvature 'R' of the mirror?

  1. A-20 cmCorrect
  2. B-10 cm
  3. C-18 cm
  4. D-15 cm

Answer: A. -20 cm

Official answer key verified. Detailed explanation coming soon.

Source: RRB JE 2019 CBT-1 (27-May-2019 Shift 1) — cracku.in solved paper with answer key · reliable-secondary

← Q1805View full paper (3719 questions)Q1807 →

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