CBSE Class 7 - Lenses Videos
Light, Mirrors and Images
Types of lenses,related technical terms, image formation by concave and convex lens.
- camera
- What is a lens? Name two types of lenses.
- What is the difference between a concave and convex lens?
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Identify the lens shown in the figure.
- Which lens is called as converging lens and why?
- Which lens is called as diverging lens and why?
- What type of image is formed by a concave lens?
- What are the uses of lenses?
- Diagrammatically show the converging and diverging lens.
- What is the difference between a virtual image of an object formed by a convex lens and that formed by a concave lens?
