Post-UTME Physics 2015 Objective — Question 19
Question 19 of 20 from the Post-UTME Screening (Post-UTME) Physics 2015 Objective paper, with the correct answer and a full explanation.
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An object is placed 20 cm in front of a plane mirror. If the mirror is moved 5 cm towards the object, what is the distance between the image and the object?
- A. 30 cmCorrect
- B. 15 cm
- C. 45 cm
- D. 25 cm
Explanation
New object distance = 20-5=15cm, so image distance (behind mirror) is also 15cm. Total distance between image and object = 15+15 = 30cm.
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