Physics - Lenses 0.0 / 5 ? PhysicsLensesIGCSEAQA Created by: becky.65Created on: 18-04-16 19:37 What happens when parallel rays of light pass through a convex lense? They are refracted so that they converge to a point 1 of 13 What is the point that light rays always converge to? The principle focus 2 of 13 In convex lens, what happens if the object is beyond 2F? An inverted, real, smaller than the object image is formed 3 of 13 In a convex lens, what happens if the object is at 2F? An inverted, real, same size as the object image is formed 4 of 13 In a convex lens, what happens if the object is between F and 2F? An inverted, real, larger than the object image is formed 5 of 13 In convex lens, what happens if the object is less than F? An upright, virtual image is formed behind the image and the image is magnified 6 of 13 How can magnification be calculated? magnification = image height/object height 7 of 13 What happens when parallel rays of light pass through a concave lens? They are refracted so that they diverge from a point 8 of 13 What image is always produced by a concave lens? It is always virtual, upright, smaller than the object and on the same side as the object 9 of 13 What causes short sight? The uncorrected image is formed in front of the retina because the eyeball is too long or the eye lens is too powerfu 10 of 13 How can short sight be corrected? Using a diverging lens 11 of 13 What causes long sight? The uncorrected image is formed behind the retina because the eyeball is too short of the eye lens is too weak 12 of 13 How can long sight be corrected? Using a converging lens 13 of 13
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