The distance of the principal focus from the pole is called the focal length (f). The distance of the object from its pole is called the object distance (u). Class 10 Mirror Formula and Magnification - Light Reflection and Refraction, Class 10, Science | EduRev Notes Summary and Exercise are very important for perfect preparation. Filed Under: Class 10, Light-Reflection and Refraction Tagged With: image distance, magnification, mirror formula, object distance, real image, virtual image About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. To know more, visit Byju's.com It is given that in plane mirror, object height and image height are equal. Question 3 What are the sign conventions for a convex mirror? Sign convention for reflection by spherical mirror, Filed Under: Class 10, Light-Reflection and Refraction Tagged With: image distance, magnification, mirror formula, object distance, real image, virtual image. It is defined as ratio of size of image(h’) to size of object(h). Moreover, it means that they make an image as large as zoom (appearance). Question 1 An object is placed at a distance of 10cm from a convex mirror of focal length 15cm.Find the position and nature of the image? Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. A ray of light starting from the end point A of the object and moving parallel to the principal axis strikes the mirror at the point E. it is reflected at E and passes through the principal focus F. Your email address will not be published. A negative sign in the value of the magnification indicates that the image is real. The distance of the image from the pole of the mirror is called the image distance (v). She has started this educational website with the mindset of spreading Free Education to everyone. From the figure given above, it is obvious that the object AB is placed at a distance of U from P which is the pole of the mirror. The distance of the principal focus from the pole is called the focal length (f). Formula of Magnification. The distance of the image from the pole of the mirror is called the image distance (v). Class 10 Physics Light Reflection Refraction: Mirror Formula & Magnification: Mirror Formula & Magnification. Magnification produced by a spherical mirror gives the relative extent to which the image of an object is magnified with respect to the object size. The power of a lens is defined as the reciprocal of its focal length. The distance of an object on principal axis from pole of spherical mirror is called object distance(u). It is also given in terms of image distance and object distance. The -ve value of magnification represents real image of an object. Mirror Formula & Magnification; Refraction of Light; Refractive Index; Refraction by spherical lenses; Terms related to lenses. Question 5 Write the mirror formula for a spherical mirror? Understanding the magnification physically is quite easy and every one of us can recognize it. Required fields are marked *, The distance of an object on principal axis from pole of spherical mirror is called, The distance of position of image on principal axis from pole of spherical mirror is called. Class 10 Physics Light Reflection Refraction. The derivation of mirror formula is given below. The +ve value of magnification represents virtual image of an object. Mirror Formula Derivation. Calculating magnification with the help of lens formula: Magnification of a lens is defined as the ratio of the height of an image to the height of an object. A positive sign in the value of the magnification indicates that the image is virtual. Mirror Formula : Where:-The distance of the object from its pole is called the object distance (u). (14.4) where an object OA, is placed in front of a concave mirror. Image formation by lenses ; Sign convention for spherical lenses; Lens formula & Magnification; Power of a lens; Class 10 Physics Light Reflection Refraction: Power of a lens: Power of a lens. Your email address will not be published. It is equal to the ratio of image distance to that of … Complete Mirror Formula and Magnification … The distance of the principal focus from the pole is called the focal length (f). Mirror Formula : Where:-The distance of the object from its pole is called the object distance (u). The distance of position of image on principal axis from pole of spherical mirror is called image distance(v). The Mirror formula explains how object distance (u) and image distance (v) are related to the focal length of a spherical mirror. Learn about Mirror Formula, its derivation and Magnification formula for class 10 Physics. Q: Using magnification formula, prove that image formed by a plane mirror is at the same distance as object but behind the mirror. Economics Chapter 1 Development – Notes & Study Material, Geography Chapter 6 Manufacturing Industries – Notes & Study Material. Second Formula for Magnification There is another formula of magnification Note : - If magnification (m) is positive , It means image formed is virtual and erect If magnification (m) is negative, It means image formed is real and inverted Questions Example 10.1 - A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. Concave mirror formula. 10.01 Reflection of Light; 10.02 Spherical Mirrors; 10.03 Guide to Image formation in spherical mirrors; 10.04 Image formation by concave mirror; 10.05 New Cartesian Sign Convention, Mirror formula and Magnification The diagram given below will help learners to understand the mirror formula derivation more effectively.

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