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Which of the following terms describe lenses that are thinner at the center than at the edges? There could be more than one correct choice A) converging lenses B) diverging lenses C) concave lenses D) convex lenses A convex lens has focal length f. If an object is located at "infinity" (very far away), the image formed is located at a distance from the lens A) of 2f B) between f and 2f C) of f D) between f and infinity. A convex lens has focal length f. If an object is placed at a distance between f and 2f from the lens on the principal axis, the image will be located at a distance from the lens A) of 2f B) between f and 2f C) of f D) that is greater than 2f E) of infinity. Which of the following terms describe lenses that are thicker at the center than at the edges? (There could be more than one correct choice:) A) converging lenses B) diverging lenses C) concave lenses D) convex lenses If an object is placed between a convex lens and its focal point, the image formed is A) virtual & upright B) virtual & inverted C) real & upright D) real & inverted. A convex lens has focal length f. If an object is placed at a distance of 2f from the lens on the principal axis, the image is located at a distance from the lens A) of 2f B) between f and 2f C) of f D) between f and infinity. Which of the following statements about the image formed by a single converging lens are true? (There could be more than one correct choice) A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) None of the above choices are correct. Which of the following statements about the image formed by a single diverging lens are true? (There could be more than one correct choice) A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) The image is always smaller than the object. Is it possible to see a virtual image? A) No, since the rays that seem to emanate from the virtual image do not in fact emanate from it. B) No, since virtual images do not really exist. C) Yes, because the rays that appear to come from the virtual image can be focused by the eye. D) Yes, but only by using an additional lens to form a real image before the light reaches the eye. 10. A cell phone is placed 40 cm in front of a converging lens with a focal length of magnitude 20 cm. How far is the image of this phone from the lens? A) 40 cm B) 20 cm C) 13 cm D) 60 cm E) 10 cm 11. A coin is 12 cm in front of a converging lens with a focal length of magnitude 4.0 cm. Where is the image? A) 8.0 cm behind the lens B) 6.0 cm in front of the lens C) 6.0 cm behind the lens D) 4.0 cm in front of the lens 12. A seed is 15 mm in front of a converging lens and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens? A) 1 mm B) 5.5 mm C) 3.8 mm D) 3.2 mm

          Which of the following terms describe lenses that are thinner at the center than at the edges? There could be more than one correct choice A) converging lenses B) diverging lenses C) concave lenses D) convex lenses
A convex lens has focal length f. If an object is located at "infinity" (very far away), the image formed is located at a distance from the lens A) of 2f B) between f and 2f C) of f D) between f and infinity.
A convex lens has focal length f. If an object is placed at a distance between f and 2f from the lens on the principal axis, the image will be located at a distance from the lens A) of 2f B) between f and 2f C) of f D) that is greater than 2f E) of infinity.
Which of the following terms describe lenses that are thicker at the center than at the edges? (There could be more than one correct choice:) A) converging lenses B) diverging lenses C) concave lenses D) convex lenses
If an object is placed between a convex lens and its focal point, the image formed is A) virtual & upright B) virtual & inverted C) real & upright D) real & inverted.
A convex lens has focal length f. If an object is placed at a distance of 2f from the lens on the principal axis, the image is located at a distance from the lens A) of 2f B) between f and 2f C) of f D) between f and infinity.
Which of the following statements about the image formed by a single converging lens are true? (There could be more than one correct choice) A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) None of the above choices are correct.
Which of the following statements about the image formed by a single diverging lens are true? (There could be more than one correct choice) A) The image is always real. B) The image is always virtual. C) The image is always inverted. D) The image is always upright. E) The image is always smaller than the object.
Is it possible to see a virtual image? A) No, since the rays that seem to emanate from the virtual image do not in fact emanate from it. B) No, since virtual images do not really exist. C) Yes, because the rays that appear to come from the virtual image can be focused by the eye. D) Yes, but only by using an additional lens to form a real image before the light reaches the eye.
10. A cell phone is placed 40 cm in front of a converging lens with a focal length of magnitude 20 cm. How far is the image of this phone from the lens? A) 40 cm B) 20 cm C) 13 cm D) 60 cm E) 10 cm
11. A coin is 12 cm in front of a converging lens with a focal length of magnitude 4.0 cm. Where is the image? A) 8.0 cm behind the lens B) 6.0 cm in front of the lens C) 6.0 cm behind the lens D) 4.0 cm in front of the lens
12. A seed is 15 mm in front of a converging lens and the image of the seed is 4.0 mm behind the lens. What is the focal length of the lens? A) 1 mm B) 5.5 mm C) 3.8 mm D) 3.2 mm

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