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An object is placed 20.0cm in front of a converging lens of focal length 15.0cm....

Physics
WAEC 2011
An object is placed 20.0cm in front of a converging lens of focal length 15.0cm. Calculate its image distance
  • A. 1.3cm
  • B. 8.6cm
  • C. 35.0cm
  • D. 60.0cm
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Correct Answer: Option D
Explanation
\(\frac{1}{v} = \frac{1}{f} - \frac{1}{U}\)

\(\frac{1}{15} - \frac{1}{20} = 60cm\)
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