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Laws of Reflection and Plane Mirror Images Reflection When light strikes a surface, some is _______________; the rest bounces off the surface. This is called ___________________. Reflection on Different Surfaces Reflecting surface is rough - produces a ____________ reflection. Reflecting surface is smooth - produces a __________ (uniform) reflection Reflecting Light Terms Reflection: The bouncing back of light from a surface Image: A reproduction of an object through the use of light Incident Ray: approaching ray Reflected Ray: ray that the mirror reflects Point of Incidence: place where incident ray strikes a mirror Normal: line at right angles to the surface of the mirror drawn at the point of incidence Angle of Incidence: angle between the Incident Ray and the Normal Angle of reflection: angle between the Reflected Ray and the Normal Laws of Reflection 1) The Angle of Incidence ___________ the Angle of Reflection 2) The Incident Ray, the Reflected Ray and the Normal all lie in the ______________________ Images in Plane Mirrors When your eyes detect light from a plane mirror, your brain projects these light rays backwards in a ________________ This results in your brain thinking the light source is behind the mirror Impossible, a mirror is opaque This is a ________ image (an image in which light only appears to come from the image) Image Characteristics When discussing images we use the acronym LOST, the image is always discussed relative to the object. L Location O Orientation S Size T Type Image Characteristics of a Plane Mirror Location: Image distance is same as object distance Orientation: Laterally inverted Size: No magnification Type: Image is virtual (cannot be focused on a screen) Attitude: Mirror image is laterally inverted. Real Image: Image formed at the point where reflected rays converge (come together) Located in front of a mirror Will appear on a screen Virtual Image: Image formed at the point where reflected rays appear to diverge (disperse) Located behind a mirror Will NOT appear on a screen