reflection

• 1 - take a piece of paper and draw a straight line across it. place an object so one of its sides line up with this line
• 2- shine a ray of light at the objects surface and trace the incoming and reflected light beams
• 3- draw the normal at the point where the ray hits the object. use a protractor to measure the angle of incidence and the angle of reflection and record these values in a table. make note of width and brightness of reflected light ray
• 4- repeat experiment with range of objects
• mirrors give clear reflection, the reflected light is as thin and bright as incident ray. rough surfaces cause diffuse reflection which causes reflected beam to be wider and dimmer. angle of incidence always equals angle of reflection