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Home  >>  AIMS  >>  Class11  >>  Physics  >>  Units and Measurement
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Determine the focal length of the lens from the following readings: \[\] Object distance, $\qquad u = 20.1 \pm 0.2 cm$ \[\] Image distance, $ \qquad v = 50.1 \pm 0.5 cm$.

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$14.3 \pm 0.4$ cm
Hence (D) is the correct answer.
answered Jun 1, 2014 by thanvigandhi_1
 

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