Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 1 (Q.No. 17)
17.
Diopter is the power of a lens having a focal length of
Discussion:
12 comments Page 1 of 2.
Rixu said:
6 years ago
@Sharad Sethi.
25 is the minimum sight distance to see an object clearly, don't get confused here with diopter.
25 is the minimum sight distance to see an object clearly, don't get confused here with diopter.
(1)
Er Meghanada (Bhadrak.Odisha) said:
8 years ago
Chromatic Aberration ? :
->For Single Lenses the focal length of blue light will be slightly shorter than that for red light is know as Chromatic aberration,
Spherical Aberration:
->In Real Spherical lenses these outer rays do not focus at exactly the same point because of spherical aberration,
F = Focal Length ,
P = 1/F power lenses.
1 diopter equal 100 c.m./1 m.
->For Single Lenses the focal length of blue light will be slightly shorter than that for red light is know as Chromatic aberration,
Spherical Aberration:
->In Real Spherical lenses these outer rays do not focus at exactly the same point because of spherical aberration,
F = Focal Length ,
P = 1/F power lenses.
1 diopter equal 100 c.m./1 m.
(1)
Er Meghanada (Bhadrak.Odisha) said:
8 years ago
@Mani & @ Bhavesh prajapat _Said
What is Means Diopter:-
-> A dioptre (uk), or diopter (us), is a unit of measurement of the optical power of a lens or curved mirror,
-> which is equal to the reciprocal of the focal length measured in metres.
Slove:-
1/metres For example, a 3-dioptre lens brings parallel rays of light to focus at 1/3 metre.
(Right Answer- 1 Diopter egual 100 cm or 1 m.)
What is Means Diopter:-
-> A dioptre (uk), or diopter (us), is a unit of measurement of the optical power of a lens or curved mirror,
-> which is equal to the reciprocal of the focal length measured in metres.
Slove:-
1/metres For example, a 3-dioptre lens brings parallel rays of light to focus at 1/3 metre.
(Right Answer- 1 Diopter egual 100 cm or 1 m.)
(1)
Abhishek Anand said:
9 years ago
@Monika.
Value of 1/f =1/100.
So f=100.
Value of 1/f =1/100.
So f=100.
Amit ami shaRma said:
9 years ago
@Mani & @Bhavesh.
Diopter is a unit of power of lens.
Diopter is a unit of power of lens.
Bhavesh Prajapati said:
9 years ago
What you mean by Diopter?
Mani said:
9 years ago
Diopter means?
Monika said:
9 years ago
Then the answer is 1/100. How the answer will be 100.
Sharad sethi said:
10 years ago
Then what is relationship between diopter and 25 cm?
Abhisheks said:
1 decade ago
1D = 1/f, where f = 100 cm or 1 m.
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