m = -v/ u m= h'/h It will be always negative because virtual and erect image is formed by the convex mirror. Image distance is the distance of the image from the pole of the mirror and it is denoted by the letter v. And focal length is the distance of the principal focus from the pole of the mirror. The mirror formula is applicable for both, plane mirrors and spherical mirrors (convex and concave mirrors). Practice: Concave and convex mirrors. Practice: Nature and size of images from magnification. Example Problem #1 A 4.0-cm tall light bulb is placed a distance of 35.5 cm from a convex mirror having a focal length of -12.2 cm. Our mission is to provide a free, world-class education to anyone, anywhere. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Solved example: Mirror formula. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. For make‐up and shaving mirrors the most common ratings are 3X, 5X, 7X and 10X. Next lesson. It can be defined as the extent to which the image appears bigger or smaller in comparison to the object size. Determine the image distance and the image size. Refraction of light. Where, Magnification (m) = h/h’ And h’ is the image height and h is the object height. Magnification is denoted as the letter ‘m’. Donate or volunteer today! Practice: Using the magnification formula for mirrors, Practice: Nature and size of images from magnification, Nature and size of images from magnification. Khan Academy is a 501(c)(3) nonprofit organization. This is the currently selected item. A plain flat mirror would be rated at 1X and one that makes an object 3 times larger would be rated at 3X. https://www.khanacademy.org/.../v/magnification-formula-for-mirrors Object distance is the distance of the object from the pole of the mirror; denoted by the letter u. Donate or volunteer today! If you're seeing this message, it means we're having trouble loading external resources on our website. There is a formula for the magnification but, unfortunately, it is not always applied correctly. As a demonstration of the effectiveness of the Mirror equation and Magnification equation, consider the following example problem and its solution. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. The Mirror formula explains how object distance (u) and image distance (v) are related to the focal length of a spherical mirror. If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Magnification formula for mirrors. The expression which gives t… Determine the image distance and the image size. Khan Academy is a 501(c)(3) nonprofit organization. 3) For most users a 3X or a 5X mirror works very well. Magnification can also be related to the image distance and object distance; therefore it can also be written as: m = -v/u Where v i… A mirror formula can be defined as the formula which gives the relationship between the distance of object ‘u’, the distance of image ‘v’, and the focal length of the mirror ‘f’. It will always less than 1. Example Problem #1 A 4.00-cm tall light bulb is placed a distance of 45.7 cm from a concave mirror having a focal length of 15.2 cm. Practice: Using the magnification formula for mirrors. It is represented as the ratio of the height of the image to the ratio of the height of the object. As a demonstration of the effectiveness of the mirror equation and magnification equation, consider the following example problem and its solution. Our mission is to provide a free, world-class education to anyone, anywhere. Practice: Using the magnification formula for mirrors, Practice: Nature and size of images from magnification, Using the magnification formula for mirrors. Physically, we all understand what is magnification.

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