The focal length of the lens is approximately 0.5 m 1.0 m 2.0 m 4.0 m What is th

Question

The focal length of the lens is approximately 0.5 m 1.0 m 2.0 m 4.0 m What is the magnitude of the image's magnification when the object is placed 2 m from the lens? 1/3 1 3 The magnification is undefined because the image is an infinite distance from the lens. following material. A group of students collected data using a lens. They varied the distance s_0 of an object from the lens and measured the image distance s_i. The figure above is their graph of the inverse of the image distance as a function of the inverse of the object distance.

Explanation / Answer

27) using 1/f = 1/so + 1/si

1/f = 0.5+1.5

1/f = 2

f = 1/2 = 0.5 m

28)when so = 2m

1/so = 1/2 = 0.5

corresponding 1/si = 1.5

si = 1/1.5 = 2/3

magnifiction is m = si/so =(2/3)/2 = 1/3 is the final answer

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