Question

Review IC Part A A 30-year-old optometry patient focuses on a 6.50 cm-tall photograph at his near point. (See the table below.) We can model his eye as a sphere 2.50 cm in diameter, with a thin lens at the front and the retina at the rear. Receding of near point with age: Age (years) Near point (cm) 10 7 10 What is the effective focal length of his eye when he focuses on the photo? Express your answer in centimeters. f = 2.1 cm 20 30 14 Submit Previous Answers 40 22 50 40 Correct Correct answer is shown. Your answer 2.12 cm was either rounded differently o 60 200 different number of cianificant figures than required for this nart

Please help with part C and E

Answer 1

() f = un oli2 = 2.50 CM -- &lt j ㅋㅗ T ㅜ 215 =me 13.125 cm = 0.19 tv 275 ma u 13.125 0.19 ) (6-50 :: (1) = (M! 12.4 mm U= -2.50m + = 2.10 cm V * V = 2:12 cm t --215 -0-02) :. m 2.12 2.50 = 0.847 Thl (0.8971(6.5) cm =5.51 cm M 55.) limo

Answer 2

C is 11.6mm