Please answer all parts! Thank you!! :) n The Expert TA 1 Human-like G × Chegg S

Question

Please answer all parts! Thank you!! :)

n The Expert TA 1 Human-like G × Chegg Study Guided Sciuto × Kylie ·c Secure https://ust49wa.theexpertta.com/Common/TakeTutorialAssignment.aspx Home Student: kylie.young@wsu.edu My Acco Class Management I Help Review Extra Credit Begin Date: 7/20/2017 11:59:00 AM -- Due Date: 8/8/2017 11:59:00 PM End Date: 8/8/2017 11:59:00 PM (6%) Problem 13: Consider a magnifying glass that produces a magnification of 3.00 when held 6.5 cm from an object, such as a rare coin 50% Part (a) What is the focal length, in centimeters, of the magnifying glass? 50% Part (b) Calculate the power of the magnifier in diopters Grade Summary 0% 100% ed sin0 cotan Submissions cos0 asin) atan acotan0sinh0 cosh0tanh) cotanhO ed Attempts remaining: 20 096 per attempt) detailed view acos END Degrees O Radians DELCLEAR Submit Hint I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback

Explanation / Answer

Given that

magnification power m=3`

object distance u=6.5 cm

now we find the image distance

m=-v/u

3=-v/6.5

image distance v=-19.5 cm

now we find the focal length

focsl length f=uv/u+v=-19.5*6.5/-19.5+6.5=9.75 cm

now we find the power of the glass lens

power P=1/f=100/9.75=10.3D

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