Multiple choice general knowledge science & technology

Which of the following is not a type of Convex lens?

  1. Biconvex

  2. Plane Convex

  3. Positive Meniscus

  4. Negative Meniscus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A convex lens is always thicker at the center than at the edges and converges light rays. The three types of convex lenses are biconvex (both surfaces convex), planoconvex (one flat, one convex), and positive meniscus (one convex, one concave but still converging). A negative meniscus lens is thinner at the center and is a diverging (concave) lens, not convex.

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