doctor has prescribed a corrective lens of power + 2 D. Find the focal length of the lens
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Answer:
Power of lens p=+1.5D
p=
f
1
1.5=
f
1
f=
1.5
1
m
f=
15
10
m
f=
3
2
m=0.67m
Focal length of the lens is +0.67m.
The prescribed lens is converging in nature.
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