Calculate the light of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high

Assessment: JAMB UTME - Physics - 2017 Subject: Physics

Question 1 Report

10 cm

16 cm

5 cm

14 cm

Answer Details

Magnification =

\frac{Length of camera}{distance of object from pin hole}

m = $\frac{12}{60}$

= 0.2

Also magnification m = $\frac{Height of image}{Height of object}$

∴ Height of image = m × height of object

= 0.2 × 70

= 14cm

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