Question:

Draw a ray diagram showing the formation of a virtual image by a convex lens.

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Convex lens + object between O and F → Virtual, erect, magnified image (same side)

Updated On: Mar 22, 2026

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Solution and Explanation

Concept: Image formation by a convex lens
A convex lens can form a virtual, erect, and magnified image when the object is placed between the optical centre (O) and the principal focus (F). Step 1: Position of object}
Place the object between: \[ O \text{ and } F \] Step 2: Draw principal rays}
From the top of the object:

Draw a ray parallel to the principal axis; after refraction, it passes through the focus on the other side.
Draw a ray through the optical centre; it passes undeviated.

Step 3: Extend rays backward}
The refracted rays diverge, so extend them backward. Their extensions meet on the same side of the lens. Step 4: Nature of image}