alleryA lens thicker at the middle than at the edges is called:
ACompound
BComplex
CConvex
DConcave
Answer & Solution
Correct answer: C. Convex
1. It is bounded by two outward curving surfaces.
2. It brings light rays together.
3. It is a convex lens.
_Source: syllabus Science, Ch 10 'Light - Reflection and Refraction'_
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