A pinhole camera works without a lens. It uses a tiny aperture (pinhole) to allow light to enter and form an inverted image on the opposite screen.
How many lenses does a pinhole camera use?
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Question context
This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.