how can you appreciate the power of lens which is used to write in a prescription by a doctor
Answers
Answered by
5
lens having a power +1.5 D will have a focal length of
P =1/f
+1.5 D = 1/f
f = 1/1.5 = 2/3 = + 0.67 m.
The focal length is + 0.67m.
The nature of lens is converging type or convex lens.
The defect of the eye is Hyperopia or far-sightedness
Answered by
4
Explanation:
Given
P = +1.5 D
Find out
We need to find out the focal length of the given lens
Solution
We know that
f = 1/P
Where,
f is the focal length
P is power
f = 1/P
= 1/+1.5 = 0.67 m.
As the power of the lens is (+ve), the lens is
converging.
Hope it well help you to
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