Question

A slide projector needs to create a 99.0 cm -high image of a 1.80 cm -tall slide. The screen is 295 cm from the slide. Part A You may want to review (Page 960) For help with math skills, you may want to review: What focal length does the lens need? Assume that it is a thin lens. Rearrangement of Equations Involving Multiplication and Division Express your answer with the appropriate units. For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Using a lens to make an image. HẢ Value Units Request Answer Submit Part B How far should you place the lens from the slide? Express your answer with the appropriate units. HA Value Units Request Answer Submit

Answer 1

Sol Image Height = 99.0cm object Herght = 1-80cm object distance t Image distance = 295 cm V + 2= 295 - magnification ho 99 SJ > 3 99 V- 994 - 1-80 ② from and 99 24 + 4 = 295 T-80 2 = 295 x1-80 = 5.27 cm 99 +1.80 - so lens the should be kept 5.27cm away from slide. 4 - 5.27 cm Ve 289-73 $== - = 1 +1 289.73 5.25 f= 289.73 * 5.27 289-73 + 5.27 f = + 5.18 cm