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level: thin converging lens

Questions and Answers List

level questions: thin converging lens

QuestionAnswer
what are convex (converging lens)makes parralel rays coverage to a principle focus
what are concave (diverging) lensmakes parallel rays diverge (spread out) used in glasses to correct short sightedness
what is the focal lengththe distance between the centre of the lens and its point of focus
what is the principle focusthe point where parallel rays meet after they pass through a lens
real imagean image that can be formed on a screen
virtual imagean image that can't be formed on a screen
if an image is formed after the lens..it is real
if an image is formed before the lens.....its is virtual