TE-Prelab _ PHY2054L_ Laboratory for PHY2054

whether the corresponding focal lengthfis positive or negative. Then string together six letters, either apfor positive ornfor negative (with no spaces between them) for the six cases a­f. For example, if youthought a­c were negative and d­f were positive, you should enter nnnppp as your answer. You must getall six letters correct to receive credit for this question.ppppnnCorrect!Correct Answersppppnn1 / 1 ptsQuestion 4An object is 1.0 cm tall and its erect image is 5.0 cm tall. What is the exact magnification?5.0000Correct!Correct Answers5.0 (with margin: 0.0)

5/31/2017TE-Prelab : PHY2054L: Laboratory for PHY2054, Fall 20163/40.5 / 0.5 ptsQuestion 5When using the Lens Equation, a virtual image has apositive image distancepositive object distancenegative image distanceCorrect!0.5 / 0.5 ptsQuestion 6Answer 1:Answer 2:If light rays actually converge to the image point, the image is said to be a real image and the imagedistance is positive. If the rays diverge, they should be extended backward with dashed lines to thecommon image point where they appear to meet. The image is said to be a virtual image.realCorrect!virtualCorrect!1 / 1 ptsQuestion 7The scale at the bottom of the diagram is calibrated in cm. Find the focal length of the lens (in cm). (Donot include units with the answer.)15.0000Correct!Between 14.25 and 15.75

5/31/2017TE-Prelab : PHY2054L: Laboratory for PHY2054, Fall 20164/4Correct AnswersQuiz Score:5out

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