The distance of the object is 30 cm, the image distance is 60 cm. What is the
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Question:
The distance of the object is 30 cm, the image distance is 60 cm. What is the focal length of this converging lens?
A. 60 cm
B. 90 cm
C. 20 cm
Related Book For
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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