Draw a ray diagram for question 14

Draw a ray diagram for question 14 ioc:m. placed the the ray diagram. at or JO from a convex Find the arid nature ofthe image. 13. is does this An 5.0 length distance of 20 in front of a position of the image.its and size -f An object of sue. 7.0 placed ai in front of concave. mirror length 18 eni. A1 what from the mirror should a screen be placed. so shAip fi»cussed be obtained? Find the size and the nat ure of the Find length of a lens ofpower — 2.0 D: What type of lens is this? A p.vscribüa corrective lens 01 power .5 D. Find the focal the lens. Is Ule prescribed lens diverging or convergin

G i v e n h o = 5 c m u = - 20 c m f = 30 / 2 = 15 c m 1 / f = 1 / v + 1 / u 1 / 15 = 1 / v - 1 / 20 v = 60 / 7 c m m = - v / u = 0.428 H e i g h t o f i m a g e = m * h o = 2.142 c m V i r t a u l, e r e c t a n d d i m i n i s h e d

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