Question

A convex lens gives a virtual image when the object is placed on the principal axis

• A. at infinity
• B. at centre of curvature
• C. between focal point and optic centre
• D. between focal point and centre of curvature

Answer 1

The Correct Option is C

A convex lens forms a virtual image when the object is placed between the focal point (F) and the optic center (O) of the lens. In this situation, the image is virtual, erect, and magnified.

At infinity: A real, inverted, highly diminished image is formed at the focal point. 
At the center of curvature (2F): A real, inverted, same-sized image is formed at the center of curvature on the other side. 
Between the focal point (F) and the center of curvature (2F): A real, inverted, magnified image is formed beyond the center of curvature on the other side.