JAMB Physics 2015 Objective — Question 49

Question 49 of 50 from the Joint Admissions and Matriculation Board (JAMB) Physics 2015 Objective paper, with the correct answer and a full explanation.

If the distance between the object and the pinhole of a pinhole camera is reduced by half, the size of the image of the object

A. is doubledCorrect
B. is quadrupled
C. remains the same
D. is halved

Explanation

Image size is inversely related to object distance from the pinhole (for fixed screen distance); halving the object distance doubles the image size.

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