Linear Optics Problem 19.4-Enhanced-with Feedback 20 of 22> Previous Answers Con

Question

Linear Optics Problem 19.4-Enhanced-with Feedback 20 of 22> Previous Answers Constants Correct Here we learn how to apply the thin-lens equation to calculate the distance needed between A photographer uses his camera, whose lens has a 60 mm focal length, to focus on an object 4.0 m away. He then wants to take a picture of an object hat is 30 cm away the lens and the film You may want to review (Pages 601-602) Part B How far must the lens move to focus on this second object? Express your answer to two significant figures and include the appropriate units. AzValue Units Submit Request Answer Provide Feedback Next >

Explanation / Answer

Given,

when object at 4 m

image is at (0.06 * 4) /(4 - 0.06) = 6.09 cm

when object is at 30 cm

image is at (0.06 * 0.3/(0.3 - 0.06) = 7.5 cm

hence we can say that lens need to be moved away by an amount of 1.41 cm

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