JAMB Physics 2023 Objective — Question 24
Question 24 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2023 Objective paper, with the correct answer and a full explanation.
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An image in a convex lens is upright and magnified 3×. Focal length=15 cm. Object distance:
- A. 14 cm
- B. 10 cmCorrect
- C. 20 cm
- D. 22 cm
Explanation
m=3 (virtual); v=-3u; 1/15=1/u-1/3u=2/3u → u=10 cm.
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