Question

What represents the aperture in a lens?

• A. The distance between A & B
• B. The distance between C & D
• C. The distance between A & O
• D. The distance between O & B

Answer 1

The correct option is A The distance between A & B

The area through which light passes through is generally called as aperture. Hence, the distance from A to B represents the aperture of the lens.

We prefer shorter aperture because shorter the aperture, thinner would be the lens for same focal length. Thinner lens behave more ideally than their thicker counterparts.