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Byju's Answer
Standard X
Physics
Power of a Lens
What is the p...
Question
What is the power of a convex lens lens whose focal length is 80 cm?
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Solution
Power of a lens is given by:
Power (P) =
1
f
∴
P =
1
80
×
10
-
2
=
100
80
= 1.25 D.
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The focal length of a convex lens is 25 cm. What is its power ?
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