6 9 m m96 multiplelensesexercises

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Unformatted text preview: 7 m (D) s 2 = +0 .5 7 m (E) s 2 = +2 .7 m THE OBJECT FOR THE SECOND LENS IS THE IMAGE OF THE FIRST LENS s 2 = ­0 .5 7 OR s 2 = +0 .5 7 Im a g e o f firs t le ns is a R EAL o b je c t fo r th e s e c o nd le ns Multip le Le ns e s Exe rc is e s Multip Two converging lenses are set up as shown. The focal length of each lens is 47 cm. The object is a light bulb located 70 cm in front of the first lens. Le ns s e p a ra tio n = 2 m s 1 =7 0 c m f=4 7 c m s 1 ’ = 1 .4 3 m s 2 = 0 .5 7 m What is the nature of the FINAL image in terms of the ORIGINAL object? (A) R EAL UP R IG HT (B) R EAL INVER T ED fs2 s2 − f s 2 > f M2 = − s2′ s2 (D) VIR T UAL INVER T ED PICTURES EQUATIONS s2′ = (C ) VIR T UAL UP R IG HT Dra w R a y s a s a b o ve s 2 ’ > 0 M2 < 0 re a l im a g e M = M1 M2 > 0 up rig h t im a g e BB RESULTS s 2 ’ = 2 .6 9 m M = 9.6 Multiple Lenses Exercises Multiple Lenses Exercises Suppose we increase the initial object distance to 74 cm BB Le ns s e p a ra tio n =...
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