Difference between revisions of "Convex Lens"
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A '''convex''' [[lens]] is a shaped piece of [[glass]] that is thickest at the centre and thinnest at the edges. | A '''convex''' [[lens]] is a shaped piece of [[glass]] that is thickest at the centre and thinnest at the edges. | ||
Revision as of 10:10, 24 February 2019
Contents
Key Stage 3
Meaning
A convex lens is a shaped piece of glass that is thickest at the centre and thinnest at the edges.
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| A picture of a convex lens. | They symbol used in diagrams to represent a convex lens |
About Convex Lenses
- A convex lens causes parallel rays of light to converge, so it can also be called a converging lens.
- A convex lens is used to focus light.
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| A convex lens focuses parallel rays to a focal point. |
Key Stage 4 Higher
Meaning
A convex lens is a shaped piece of glass that is thickest at the centre and thinnest at the edges.
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| A picture of a convex lens. | They symbol used in diagrams to represent a convex lens |
About Convex Lenses
- A convex lens causes parallel rays of light to converge, so it can also be called a converging lens.
- A convex lens is used to focus light.
Finding the Focal Length
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| A convex lens focuses parallel rays to a focal point. |
- The focal length of a convex lens is the distance between the focal point and the centre of the lens.