Physics · Ray Optics
Suppose a point source of light is placed at the focus of an optical system and it produces a beam of light parallel to the principal axis. The system could be:
- 1Either a concave mirror or a concave lens
- 2Two plane mirrors perpendicular to each other
- 3Either a convex mirror or a convex lens
- 4Either a concave mirror or a convex lens✓
Correct answer
Either a concave mirror or a convex lens
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