Calculate the focal length, knowing that the distance from the lens to the screen is 100...

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Answer 1

Answer #1

10cm V=100mm - U= -40cm tu f 1 4-1 To 10 40 LO t + e - - - =) } - f- s? Onat Aur 1.uf- •133m Ano 40 - 13.33cm 3

Answer 2

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