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Learn how to calculate the image distance, magnification and power of a lens using the lens formula. Find out the difference between concave and convex lenses and their focal lengths.
- 8 min
- Generally, an optical lens has two spherical surfaces. If the surface is bent or bulged outwards, then the lens is known as a convex lens.
- The power of a lens is the measure of the degree of divergence or convergence of the light ray striking it. The degree of divergence or convergence...
- The power of a lens is the reciprocal of the given lens’s focal length.
- Dioptre is the SI unit for calculating the power of a lens.
- The focal length is the distance between a lens and the focal point. This is the length from a mirror or lens at which parallel light rays meet.
- What Is Focal Length
- What Is Lens Formula
- What Is The Magnification Formula?
- Questions
We have already studied that Distance of Principal Focus from the optical centre of the lens is Called Focal Length It is denoted by f
This formula denotes relationship between 1. Object Distance (u) 2. Image Distance (v) 3. Focal length (f)
It is Ratio of Height of Image to the Height of Object Hence it gives extent image is magnified compared to image of object Suppose Height of object is h Height of Image is h' Magnification is m So Magnification = Height of Image/ Height of Object m = h'/h We also have another formula for magnification in lenses Magnification = v/u where v is image...
Example 10.3 - A concave lens has focal length of 15 cm. At what distance should the object from the lens be placed so that it forms an image at 10 cm from the lens? Also, find the magnification produced by the lens. View Answer Example 10.4 - A 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm....
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Aug 2, 2024 · Learn the lens formula for convex and concave lenses, power of the lens, and solved examples. The lens formula is applicable to all situations and with appropriate sign conventions.
- According to the Convex Lens equation, the Lens formula is 1/f = 1/v + 1/u. It relates the Focal Length of a Lens with the distance of an object wh...
- Glass and water are transparent materials. There is a certain amount of plastic that is transparent so that the plastic can be used to make any Len...
- A Lens is a transmissive optical device that disperses or focuses a light beam utilizing refraction. A simple Lens is a Lens that consists of a sin...
- You can completely rely on Vedantu for the Physics Lens Formula as the experts at Vedantu correctly formulate all the study material related to the...
- A Convex Lens is also referred to as a converging Lens because it causes parallel light to pass through the curve and converge into an area beyond...
Learn the lens formula for spherical lenses and its application in solving problems. Physics Wallah is an online platform that provides affordable and comprehensive learning resources for students of classes 6 to 12 and JEE/NEET aspirants.
Learn how to use the lens formula (1/v-1/u= 1/f) to locate images without drawing ray diagrams. Watch a video example and see comments and questions from other students.
Learn the lens formula, linear magnification, power of lens and combination of lenses with examples and derivations. Download free notes prepared by Axisa Academy for CBSE Class 10, Physics, Light, Lens Formula.
Learn the concepts of Class 10 Physics Light - Reflection and Refraction with Videos and Stories. ... Lens Formula and Magnification. 2 mins read.
