2022 · Q85
Which one of the following statements about the aperture of a convex lens is correct ?
General KnowledgePhysics
- AIt is equal to its radius of curvature.
- BIt is equal to its focal length.
- CIt is independent of its radius of curvature.
- DIt is equal to half of its focal length.
Explanation
The aperture of a lens is the diameter of its light-gathering opening, a physical dimension of the lens. It is independent of the radius of curvature or the focal length. Hence it is independent of its radius of curvature.