types of concave lens

Formation of image by a concave lens when the object is placed at infinity A convex lens is also known as a “biconvex lens” because of two spherical surfaces bulging outwards. 2. Fig. Three types of convex lenses (a) Double Convex Lens: It has both the surfaces convex. A diverging lens is called a concave lens. (b) Plano–Convex Lens: It has one surface plane and the other surface convex. An optical lens is made of transparent material such as glass or clear plastic. Here we will discuss about the Concave and Convex Lenses only. There are numerous uses of the concave lens, like in telescopes, cameras, lasers, glasses, binoculars, etc. Convex Lenses. It is thicker at the centre than at the edges. One or both surfaces usually have a spherical curve. Convex Lens. A convex lens is thicker in the middle and thinner at the edges. (b) Plano–Concave Lens: It has one surface plane and the other surface concave. 2. Plano-concave Lens. 4. There are mainly two types of lenses. At infinity 2. However, with a concave lens, we always get virtual, upright, and diminished images (regardless of the distance of the object from the lens). Images Formed By Lenses; Types of Images Formed by Lenses. Concave Lens. Figure shows the three key rays used in the construction of a ray diagram for a convex lens. There are two types of lenses, converging and diverging lenses. Converging Meniscus. The shape of a concave lense is round inward that bends the beams outward, causing divergence of the rays of light falling on it, so it is known as a diverging lens. Telescope and Binoculars Spectacles Lasers Cameras Flashlights Peepholes. There are three types of concave lenses Fig. Three types of concave lenses (a) Double Concave Lens: It has both the surfaces concave. Double concave lens. 1. Convex or Converging Lenses: These are thick in the middle and thin at the edges. 5. A lens that is concave on both sides is called a double concave lens. There are three types of concave lenses depending on the shape of the surface. Concave Lens Uses. In general, there are two types of spherical lenses. Plano-Convex Lens. Concave lenses represent the type of lenses which are slender at the centre than at the borders. (c) Convexo–Concave Lens: It has one surface convex and the other surface concave. They are:- 1. Between infinity and optical centre. Three types of concave lenses (a) Double Concave Lens: It has both the surfaces concave. Fig. Concave and Convex Lenses - The type of lenses which converge the light beam coming from the source to one point on the other side to form an image is called as a convex lens, while the concave lens which is thinner at the centre and gets thicker as we move towards the edges is called as Concave lens. This is one of the basic difference between concave and convex lenses. There are three types of concave lenses Fig. The characteristics and position of the image formed changes with the position of the object or distance of the object from the lens. Types of concave lens. 1. If the curvature radius of the two surfaces of this lens is equal, then it is called equi concave lens. The following steps are used to draw a ray diagram for a convex lens. The characteristics of the image formed can be: The ray diagram in Figure shows the characteristics and position of the image formed by a concave lens. (c) Concavo–Convex Lens: It has one surface concave and the other surface convex. Concave or Diverging Lenses: These are thin in the middle and thick at the edges. As a convex lens forms different types of images depending on the position of object, similarly a concave lens also forms different types of images when the object is placed at 1. It is thinner at the centre than at the edges. Filed Under: Physics Tagged With: concave lenses, Convex lenses, Refraction, Spherical Lens, Types Of Spherical Lens, ICSE Previous Year Question Papers Class 10, Lens Formula & Magnification – Lens Power, Image Formation By Concave And Convex Lenses, To Construct Optical Devices Using Lenses, characteristics of the image formed by a lens, Concise Mathematics Class 10 ICSE Solutions, Concise Chemistry Class 10 ICSE Solutions, Concise Mathematics Class 9 ICSE Solutions, Why Southwest Essay | Essay on Why Southwest for Students and Children in English, Border Wall Essay | Essay on Border Wall for Students and Children in English, Suicide Essay | Essay on Suicide for Students and Children in English, Heart of Darkness Essay | Essay on Heart of Darkness for Students and Children in English, Why i Want to go to College Essay | Essay on Why i Want to go to College for Students and Children in English, Plus Two Business Studies Chapter Wise Previous Questions Chapter 12 Consumer Protection, Emotional Intelligence Essay | Essay on Emotional Intelligence for Students and Children in English, Plus Two Business Studies Chapter Wise Previous Questions Chapter 4 Planning, Plus Two Business Studies Chapter Wise Previous Questions Chapter 13 Entrepreneurial Development, Fear Essay | Essay on Fear for Students and Children in English, Plus Two Business Studies Chapter Wise Previous Questions Chapter 3 Business Environment. Figure shows the three key rays used in the construction of a ray diagram for a concave lens. Diverging Meniscus. So, lenses formed by binding two spherical surfaces bulging outward are known as convex lenses while the lenses formed by binding two spherical surfaces such that they are curved inward are known as concave lenses. Concave or Diverging Lenses: These are thin in the middle and thick at the edges. (b) Plano–Concave Lens: It has one surface plane and the other surface concave. A concave lens is also called as a negative lens or a diverging lens. 3. The image is on the same side of the lens and between the object and the lens. Lenses are of two kinds: Convex Lenses and Concave Lenses. Definition: A piece of a transparent medium bounded by at least one spherical surface, is called a spherical lens. The nature of the image formed by a convex lens varies as the distance of the object from the lens changes. 6. Diagrammatic representation of images formed by lenses. A converging lens is called a convex lens.

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