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A converging thin lens has a focal length of 27 centimeters. An object is placed 9 centimeters from the lens. Where is the image of this object formed?

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A converging thin lens has a focal length of 27 centimeters. An object is placed 9 centimeters from the lens. Where is the image of this object formed?
in General Knowledge by Wooden Status (682 points)
reopened by | 875 views

1 Answer

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Best answer

(1/d0) + (1/di) = 1/f

where d0 = object distance; di = image distance; f = focal length

 (1/di) = (1/f) - (1/d0) = (1/27) - (1/9) = -2/27

di = 27/2 = -13.5 cm or 13.5 cm on the object side of the lens.

by Silver Status (24.7k points)
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