Physics Review Question Unit: Optics Year: 1995 Question#: 91 Question: Which type of images can be formed by a converging lens? (1 ) real images, only (2 ) virtual images, only (3 ) both real and virtual images (4 ) neither real nor virtual images What is this question really asking? Explanation by: Iain O. [ Return to question menu ] [ Return to question menu ] Answer 1 real images, only INCORRECT Reason: a converging lens can form both real and virtual images depending on where the object is placed relative to the focal length. If an object is placed within the focal length then a virtual image is formed. Answer 2 virtual images, only INCORRECT Reason: a converging lens can form both real and virtual images depending on where the object is placed relative to the focal length. If an object is placed outside of the focal length then a real image is formed return to top Answer 3 both real and virtual images CORRECT Reason: both real and virtual images can be created by a converging lens depending on where the object is relative to the focal point. If the object is within the focal point then a virtual image is formed. If the object is outside the focal point then a real image is formed. return to top Answer 4 retype answer 4 here INCORRECT Reason: all lenses create some sort of image. return to top What is this question really asking? What types of images can be formed by converging lenses? return to top |
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