A converging lens has a focal length of 15.0cm . For each of two objects located

Question

A converging lens has a focal length of 15.0cm . For each of two objects located to the left of the lens, one at a distance of s1 = 21.5 cm and the other at a distance of s2 = 8.00cm , determine Part A : the image position. Part B : the magnification. Part C whether the image is real or virtual. a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted A converging lens has a focal length of 15.0cm . For each of two objects located to the left of the lens, one at a distance of s1 = 21.5 cm and the other at a distance of s2 = 8.00cm , determine Part A : the image position. Part B : the magnification. Part C whether the image is real or virtual. a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted Part A : the image position. Part B : the magnification. Part C whether the image is real or virtual. a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted Part B : the magnification. Part C whether the image is real or virtual. a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted Part C whether the image is real or virtual. a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted a. Both images are real. b.The image of the first object is real and the image of the second object is virtual. c. The image of the first object is virtual and the image of the second object is real. d. Both images are virtual. Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted Part D whether the image is erect or inverted. a. Both images are erect. b. The image of the first object is erect and the image of the second object is inverted c. The image of the first object is inverted and the image of the second object is erect. d. Both images are inverted

Explanation / Answer

a) u = -21.5 cm

1/v + 1/21.5 = 1/15

so v = 49.61 cm

m = 49.61/21.5= 2.30

real

b) u = -8 cm

1/v'+1/8 = 1/15

v' = -17.1 cm

m = 17.1/8 = 2.14

virtual

The image of the first object is real and the image of the second object is virtual.

The image of the first object is inverted and the image of the second object is erect.

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