P3.2 - lenses 4.0 / 5 based on 1 rating ? PhysicsLight and OpticsGCSEAQA Created by: ChipCreated on: 12-04-13 11:05 what is a converging lens? A canverging lens is a convex lens. It makes parallel rays to converge (COME IN) a focus. 1 of 10 What are converging lenses used for? A magnifying glass and a camera lens to make distant objects clearer. 2 of 10 What is a diverging lens? It is a concave lens, that amkes parallel rays SPREAD out 3 of 10 What is a diverging lens used for? THey are used to correct short sightedness. (people's eyes who can see near but not far!) 4 of 10 How is a virtual image formed? A virtual image is formed by a diverging lens. Also if the object is closer to the lens than the principal focus 5 of 10 How is a real image formed? A real image is formed by a converging lens if the object is futher away than the principal focus 6 of 10 What is the formula to work out magnification? Image height divided by object height. 7 of 10 If the image is larger than the object...? the magnification is greater than 1 8 of 10 if the image is smaller than the object...? the magnification is less than 1 9 of 10 the distance from the centre of the lens to the principal focus is the...? focal length of the lens 10 of 10
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