For a convex lens, if the object is at the focus, what type of image is formed?
Practice Questions
Q1
For a convex lens, if the object is at the focus, what type of image is formed? (2020)
Real and inverted
Virtual and erect
No image
Real and erect
Questions & Step-by-Step Solutions
For a convex lens, if the object is at the focus, what type of image is formed? (2020)
Step 1: Understand what a convex lens is. A convex lens is a lens that is thicker in the middle and thinner at the edges, which can bend light rays inward.
Step 2: Know what the focus of a lens is. The focus is a point where light rays that are parallel to the lens axis converge or appear to diverge from.
Step 3: Place the object at the focus of the convex lens. This means the object is located at the point where light rays converge.
Step 4: Observe what happens to the light rays. When the object is at the focus, the light rays that come from the object will pass through the lens and emerge parallel to each other.
Step 5: Determine the type of image formed. Since the light rays are parallel after passing through the lens, they do not converge to form an image at any point.
Step 6: Conclude that no image is formed when the object is at the focus of a convex lens.
Image Formation by Lenses – Understanding how a convex lens forms images based on the position of the object relative to the focal point.