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Post-UTME Physics 2008 Objective — Question 3

Question 3 of 10 from the Post-UTME Screening (Post-UTME) Physics 2008 Objective paper, with the correct answer and a full explanation.

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An object of height 12.0cm is placed 240cm from a pinhole camera. If the image distance from the pinhole is 10.0cm, calculate the image height.

  • A. 12.0cm
  • B. 5.0cmCorrect
  • C. 120.0cm
  • D. 120.0m

Explanation

image height/object height = image distance/object distance: x/12=10/240, giving x=5cm.

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