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Use the Formula 1f=1s0+1si\frac { 1 } { f } = \frac { 1 } { s _ { 0 } } + \frac { 1 } { s _ { i } }

Question 191

Multiple Choice

Use the formula 1f=1s0+1si\frac { 1 } { f } = \frac { 1 } { s _ { 0 } } + \frac { 1 } { s _ { i } } . Given s0s 0 = 27.5 cm and SiS _ { i } = 38.5 cm, find f.


A) f = 33 cm
B) f = 11 cm
C) f = 96.3 cm
D) f = 16 cm
E) f = 17.1 cm

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