Quick Answer: Converging Optical Lens is a positive lens that brings parallel rays to a principal focus, used for focal-length, image-formation, magnification and lens-formula experiments.
Last updated: October 2026
Key Features
Converging action; generally thicker near the centre than at the edges
Positive focal length under the standard Cartesian sign convention
Forms real or virtual images depending on object position
Mounts in a compatible lens holder; needs no power
Technical Specifications
Specification
Value
Optical action
Converging
Lens profile
Convex
Focal-length sign
Positive (Cartesian sign convention)
About This Product
With a screen on the far side, students move the lens or screen until a sharp real image forms, record object and image distances from the optical centre and repeat at other positions to check the thin-lens relationship. It is also used in Light And Optics practicals to compare converging and diverging lens behaviour.
Frequently Asked Questions
Q1. Is a converging lens the same as a convex lens? In standard educational optics, a convex lens in air normally acts as a converging lens.
Q2. What images can it form? Real, inverted images when the object is outside the focal length, and virtual, upright images when the object is inside it.
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