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← HistoryWhich mechanism explains how Alhazen's 'camera obscura' created inverted images?
A)Light diffraction around a small aperture
B)Wave interference causing image inversion
C)Pinhole restricting light ray angles✓
D)Refraction through a lens increasing resolution
💡 Explanation
When light passes through a pinhole, the pinhole restricts each point in the scene to only send a single ray through the hole, and the rays from the top and bottom swap places. Therefore the image is inverted, rather than by diffraction interference or refraction, which operates via different wave interference principles.
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