Determine the focal length of a thin converging... - JAMB Physics 2017 Question
Determine the focal length of a thin converging lens if the power is 5.0 dioptres
A
0.1 m
B
0.2 m
C
2.0 m
D
2.5 m
correct option: b
Power of a lens = \(\frac{1}{f}\)
f = focal length
f = \(\frac{1}{p}\)
= \(\frac{1}{5}\)
= 0.2m
f = focal length
f = \(\frac{1}{p}\)
= \(\frac{1}{5}\)
= 0.2m
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