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# Wave properties

what 3 things can happen when a wave arrives at an obstacle? reflection, refraction or diffraction
how does reflection of light allow us to see objects? light bounces off them into our eyes
what happens if light travelling in the same direction reflects from an uneven surface e.g. a piece of paper? the light reflects off at different angles
what happens when light travelling in the same direction reflects from an even surface e.g. a mirror the lights is all reflected at the same angle and you get a clear reflection
what is the normal? an imaginary line that is perpendicular to the surface at the point of incidence
what is the point of incidence? where the light hits the surface
what is the law of reflection angle of incidence = angle of reflection
when drawing a ray diagram what are the important points? 1. the image is the same size as the object 2. it is as far behind the mirror as the object is in front 3. the image is virtual and upright 4. the image is laterally inverted the left and right sides are swapped
Created by: rv1

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