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We Ne
2 Doctor has Prescribed a
has Prescribed a lens having
Power & 15 D. What will be the focal
length of the lens ? what is the type
of the lens and what must be
the defect of dision. ?
Answers
Answered by
0
ANSWER
A 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.
Explanation:
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.
Answered by
0
Explanation:
A 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.
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