Differentiate between concave lens and convex lens 10 points
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Convex lenses are thicker at the middle. ... Rays of light that pass through the lens are spread out (they diverge). A concave lens is a diverging lens. When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus
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Difference between Concave and Convex Lens
Concave Lens Convex Lens
1.A concave lens is thinner in the middle and thicker at the edges.
A convex lens is thicker in the middle and thinner at the edges.
2.It is also known as Diverging Lens
It is also known as Converging Lens
3.Used in Glasses, some telescopes, spy holes in doors, etc.
It is also used for the correction of problem in short sight Used in camera, focus sunlight, overhead projector, projector microscope, simple telescope, magnifying glasses, etc. It is also used for the correction of problem in long sight.
4.Negative Focal Length Positive Focal Length
5.It diverges the incident rays away from the principal axis.
It converges the incident rays towards the principal axis.
Types of Image Formed
Concave LensConvex Lens
1.The image formed is upright, virtual, and smaller size than the object. The position of the image formed is in between the lens and the object regardless of object’s position
2.The image formed is inverted, real, and smaller than the object when the object is placed at Focus. The image formed is inverted, real, and same size as the object when the object is placed at 2F. The image formed is inverted, real, and larger than the object when the object is placed between 2F and F. No image is formed when the object is placed at Focus (F). The image formed is upright, Virtual, and larger than the object when the object is placed on the same side of the lens.
Concave Lens Convex Lens
1.A concave lens is thinner in the middle and thicker at the edges.
A convex lens is thicker in the middle and thinner at the edges.
2.It is also known as Diverging Lens
It is also known as Converging Lens
3.Used in Glasses, some telescopes, spy holes in doors, etc.
It is also used for the correction of problem in short sight Used in camera, focus sunlight, overhead projector, projector microscope, simple telescope, magnifying glasses, etc. It is also used for the correction of problem in long sight.
4.Negative Focal Length Positive Focal Length
5.It diverges the incident rays away from the principal axis.
It converges the incident rays towards the principal axis.
Types of Image Formed
Concave LensConvex Lens
1.The image formed is upright, virtual, and smaller size than the object. The position of the image formed is in between the lens and the object regardless of object’s position
2.The image formed is inverted, real, and smaller than the object when the object is placed at Focus. The image formed is inverted, real, and same size as the object when the object is placed at 2F. The image formed is inverted, real, and larger than the object when the object is placed between 2F and F. No image is formed when the object is placed at Focus (F). The image formed is upright, Virtual, and larger than the object when the object is placed on the same side of the lens.
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