Question on: JAMB Physics - 2017
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
A
10 cm
B
16 cm
C
5 cm
D
14 cm
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Correct Option: D
Magnification = (\frac{\text{Length of camera}}{\text{distance of object from pin hole}})
m = (\frac{12}{60})
= 0.2
Also magnification m = (\frac{\text{Height of image}}{\text{Height of object}})
∴ Height of image = m × height of object
= 0.2 × 70
= 14cm
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