O 4/6/2017 06:00 PM A 17.8/20 4/4/2017 03:04 PM Grade be Print Calculator Period

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O 4/6/2017 06:00 PM A 17.8/20 4/4/2017 03:04 PM Grade be Print Calculator Periodic Table Question 3 of 16 ncorrect ncorrect ncorrect ncorre Map Sapling Learning You place a 7.47-mm-high chocolate chip on the axis of and 13.7 cm from a lens with focal length 6.71 cm. If it can be determined, is the chocolate chip's image real or virtual? O Virtua O Real O Cannot be determined How high is the image (expressed as a positive quantitiy)? Number 1.1 If it can be determined, is the image upright or inverted with respect to the real thing? O Upright O Cannot be determined O Inverted Incorrect AO Previous Give Up & View solution Try Again Next Ext Explanation

Explanation / Answer

Given

   height of the chocolate chip y = 7.47 mm = 0.747 cm

   object distance s = 13.7 cm

   focal length of the lens is f = 6.71 cm

from the relation between object distance s , image distance s' and focal length f

   1/s +1/s' = 1/f

       1/s' = 1/f - 1/s

       = 1/6.71 - 1/13/7
solving for s'

       s' = 13.151 cm

from the definition of lateral magnification

   m = -s'/s = y'/y

where y' is height of the image

       -13.151/13.7 = y/0.747

       y' = - 0.717065 cm
-ve sign indicates the image is inverted real image

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