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image formed is real and inverted). It is denoted by the letter ‘m’ and is given by, The linear magnification produced by a spherical lens (convex or concave) is defined as the ratio of the height of the image (h′) to the height of the object (h). (i) For real and inverted image: According to the New Cartesian Sign Convention, for real and inverted images formed by a convex lens. where,   v = image distance u = object distance. Copyright © 2020 Entrancei. How is linear magnification applicable in plane mirrors. What do you meant by linear magnification? On the other hand, the real image is always inverted and formed below the principal axis so h2 will be negative. Angular magnification is the ratio of the angle subtended by object and image. deal this video class 10 Another point to be noted is that if the value of magnification is equal to 1, then the image formed is of the same size as that of object. The required linear magnification is the ratio of the desired image diameter to the diamond’s actual diameter (Equation \ref{eq15}). The linear magnification produced by a spherical lens (convex or concave) is defined as the ratio of the height of the image (h′) to the height of the object (h). all rights reserved. If the value of magnification is more than 1, then the image formed is enlarged, and if the value of magnification is less than 1, then the image formed is diminished. The linear magnification (m) of mirror can also be calculated in terms of image distance (v) and object distance (u), if we do not know the size (height) of object and image. This equation is used to find image distance for either real or virtual images. Linear magnification is the ratio of the size of object and image. Answer: Q1. It is denoted by the letter ‘m’ and is given by. In case of a convex lens, for real and inverted images, the magnification is always –ve and for the virtual and erect image, the magnification is always +ve. A-1, Acharya Nikatan, Mayur Vihar, Phase-1, Central Market, New Delhi-110091. If the image and the object are both in the same physical medium (e.g., water, air or outer space), then the lateral magnification formula is the size of the image divided by the size of the object: Linear magnification, also called lateral magnification or transverse magnification, is just the ratio of size of the image of an object created by a lens to the object's true size. It is a pure ratio and has no units. The ratio of the image size to the object size is the same as the ratio of the image distance to the object distance. If this equation shows a negative focal length, then the lens is a diverging lens rather than the converging lens. Answers The magnification of a mirror is represented by the letter m. where,   h2 = size of image h1 = size of object. In symbols, (C) Power Of Lens. There is no unit of magnification (m) as it is the ratio of two similar quantities. (ii) For virtual and erect image : According to the New Cartesian Sign Convention, for the virtual and erect images formed by a convex lens. unit. Lens Formula & Magnification – Lens Power. The magnification of a mirror is represented by the letter m. Thus m = Or m = where, h 2 = size of image h 1 = size of object What is the formula for calculating linear magnification of a specimen when using a hand lens . what is mirror formula? The linear magnification or magnification of a spherical mirror may be defined as the ratio of the size (height) of the image to the size (height) of the object. As the object is always placed above the principal axis so the magnitude of h1 is always positive.

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