Question

A converging lens of focal length 50 mm is to be used as a magnifying glass for inspecting stamp. A
rectangular stamp, which is 20 mm 40 mm, is placed 30 mm from the lens, find the length of the
image of the 20 mm side of the stamp:
A. 50 nim
B. 60 mm
C. 85 mm
D. 20 mm
​

Answer 1

Answer:

60 mm

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