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As with the problems, where applicable support each answer with detailed reasoni

ID: 1518697 • Letter: A

Question

As with the problems, where applicable support each answer with detailed reasoning for full credit. Do NOT regurgitate memorized results from problems worked in the teal or recitation. The large arrow in the diagram below represents an object. The two small arrows indicate the focal points of the lens. ! A ID) Of the following statements, which is/are true?(Circle A. B. C. D or E!) the image is to the left of the lens. The image is to the right of the lens the image is upright and larger than the object. The image is inserted and smaller than the object The image is upright and smaller than the object The image is inverted and larger than the object. I and V IIand V I and IV II and IV None of these is correct. If the object distance is 30.0 cm and the focal points are 15.0 cm from the center of the lens, what is the magnification of the lens?

Explanation / Answer

B1)
In case of diverging lens, image is virtual, erect, smaller and is formed on the same side as object
Answer: A

B2)
do = 30 cm
f = -15 cm
use:
1/f = 1/di + 1/do
-1/15 = 1/di + 1/30
di = -10 cm

m = -di/do
    = - (-10)/30
     = 10/30
      = 1/3
Answer: 1/3

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