JAMB Physics 2025 Objective — Question 23
Question 23 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2025 Objective paper, with the correct answer and a full explanation.
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An object 10 cm tall is placed 30 cm from a concave mirror of focal length 20 cm. The image produced is:
- A. 20 cm behind the mirror and upright
- B. 60 cm in front of the mirror and invertedCorrect
- C. 60 cm behind the mirror
- D. 10 cm in front of the mirror
Explanation
1/f=1/u+1/v → v=60 cm; real, inverted, 60 cm in front.
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