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
Correct Answer: D. 60.0cm
Explanation
\(\frac{1}{v} = \frac{1}{f} - \frac{1}{U}\)
\(\frac{1}{15} - \frac{1}{20} = 60cm\)
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