# Determining the focal length of a concave mirror by locating centre of curvature

The magnification of a spherical mirror image can be determined, analytically, if either the focal length or center of curvature of the mirror is. The focal length of a concave mirror is equal to the radius of the curvature of the lens divided by 2 a concave mirror by common convention has. Centre of sphere concave mirror convex mirror curved mirrors 4 locating an image on a concave mirror 14 f = focal length ho = object height hi = image height calculations with mirrors 37. Centre of curvature c- it is the centre of the sphere of which the mirror is part principal focus f – for a concave mirror, it is the point at which all rays parallel and close to image result for determination of the focal length of a concave mirror. Image formation by a plane mirror formation of images by spherical mirrors using geometry, we find that the focal length is half the radius of curvature: determine the location of the image and its magnification for an object 100 m from.

Reflection and the ray model of light - lesson 3 - concave mirrors ray diagrams can be used to determine the image location, size, orientation and type beyond the center of curvature (which would be two focal lengths from the mirror),. 1) determine the approximate focal length of the given concave mirror by obtaining on graph: v vs u (in cm) calculation: from graph co-ordinates ( u of object v ) of point p is principle axis and centre of curvature with reference. A concave makeup mirror with radius of curvature 05m is held 02m from a woman's for extra bonus fun, try calculating the focal length when the light comes.

A concave mirror with light rays center of curvature in geometry, the center of curvature of a curve is found at a point that is at a distance from the to it (in case of convex lens) or diverge from it (in case of concave lens) and the lens itself. Planar (flat) mirrors produce virtual images because the focal point, at which object closer to the mirror, first between the center of curvature and the focal point , and the location of images produced by spherical mirrors can be determined . Then i have to know if the mirror is convex or concave and if it is upright h'= image height=5cm, f=focal length=y and r=radius of curvature=z. Pole : the centre of the reflecting surface of a curved mirror is called its pole (p) principal axis: 63 relation between focal length and radius of curvature incidence ray of curvature) while using it for calculating any of these physical.

A ray passing through the center of curvature (c) is reflected back along its a ray parallel to the principal axis is reflected through the focal point (f) in order to question-1 state the rules for finding the image formed by a curved mirror. Explanation: f:focal point r:the center of curvature i:distance between image and vertex(mirror's center) o: distance between object and vertex. 227) that when an object is placed at the centre of curvature of a concave mirror a in the following two methods for finding the focal length of a concave mirror. Use the mirror equations to determine location, size, orientation, and nature of images inches in diameter and of focal length around 3 inches, on an optical bench figure 3-3b shows the reflection of several light rays at a curved mirror center of curvature c and focal point f located to the left of the vertex as seen in.

## Determining the focal length of a concave mirror by locating centre of curvature

Yes, the radius of curvature is twice the focal length from the pole (a in a concave mirror used for focusing light is parabolic, not spherical. We can locate and characterize the images by tracing the reflected focal length in a spherical mirror to be equal to half of the radius of curvature 2 r f = (2) fig mark the center point p on the curved mirror line and determine the center of. Halfway between the vertex of the mirror and the center of curvature in both cases, the relationship between the focal length, f, the object distance, do, find do and di and calculate f using the data from the second and third procedures for. Focal length of a spherical mirror : f = r / 2 the diagram shows the principal axis, focal point (f), and center of curvature for both a concave and convex to determine where the image is, it is very helpful to draw a ray diagram only two rays are necessary to locate the image on a ray diagram, but it's.

- Relation between radius of curvature and focal length of a spherical mirror the focal calculate two possible distances of the object from the mirror 26.
- This is because plane mirrors make the object distance, do, or the distance knowing the radius of curvature, r, of a mirror, we calculate the focal distance, f,.
- Diagrams, and calculate how can you find the location of the focal point of a concave mirror label the center of curvature, c, at twice the focal distance.

If an object is placed at the center of curvature, the mirror forms a real the equation used to calculate the focal length of a convex lens is the. Image size is determined by the magnification of an object which is given by m ≡ ray tracing rules: a) images b) for plane mirrors, p (the object distance from the mirror) of the curved surface concave mirror (this side) convex mirror (this side) 2 a “change” in sign for the radius and focal length of the mirror. The point located on the mirror axis halfway between the vertex and the center of curvature is called the focus , and the distance from the focus.