Curved Mirrors Chapter 14, Section 3 Pg. 530 - 540.

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Presentation transcript:

Curved Mirrors Chapter 14, Section 3 Pg

Two types of curved mirrors 1. Concave mirrors – inwardly curved inner surface that converges incoming light rays. 2. Convex Mirrors – outwardly curved, mirrored surface that diverged incoming light rays.

Image location can be predicted with mirror equations. Image location can be predicted with mirror equations. Curved Mirrors Principal axis Center of Curvature ( C ) Focal Length ( f ) Object distance ( p ) h 1/object distance + 1/image distance = 1/focal length 1/p + 1/q = 1/f

Curved Mirrors Alternate Mirror Equation: 1/p + 1/q = 2/R 1/object distance + 1/image distance = 2/radius of curvature

Concave mirrors… can form BOTH virtual and real images of an object depending on how far the object is placed away from the mirror. can form BOTH virtual and real images of an object depending on how far the object is placed away from the mirror. Real image: an image formed when light rays intersect at a single point. Real image: an image formed when light rays intersect at a single point.

Images produced by concave mirrors (virtual or real) will NOT be the same size of our object. Images produced by concave mirrors (virtual or real) will NOT be the same size of our object. They will be magnified (M) They will be magnified (M) magnification = image height = - image distance magnification = image height = - image distance object height object distance object height object distance M = h'/h = - q/p + M = upright and virtual image - M = inverted and real image Concave mirrors

Rules for drawing reference lines Ray Line from object Line from mirror to to mirror reflected image to mirror reflected image 1. Parallel to principal Through focal point axis F axis F 2. Through focal point parallel to principal F axis F axis 3. Through the center back along itself through of curvature C C of curvature C C

Object distance is greater than the focal length Principal axis Reflecting Surface Ray Diagram fC

Object distance is less than the focal length Principal axis Reflecting Surface Ray Diagram fC

Convex Mirrors Focal point and center of curvature are located behind the mirror’s surface. Focal point and center of curvature are located behind the mirror’s surface. M is always +, but less than 1 M is always +, but less than 1 Image is always virtual Provide a large field of view Provide a large field of view

Convex Mirrors Principal axis fC Reflecting Surface