Calculate power of lens focal length is 20cm
Answers
Answered by
3
Answer:
A diopter is the unit of measure for the power of a refractive index of a lens.
It is usually the reciprocal of the focal length of a lens.
It is denoted by D.
Formulae :
D = 1/f where F is the focal length and D is the power of the lens in Diopter.
From the question above given the focal length is 20cm we can get the power of the lens using this formula.
We first convert the cm to meters :
20/100= 0.2m
D =1/0.2
=5 Diopters
please mark it as brainlist
Answered by
0
Answer:
5 diopters
Explanation:
Similar questions
Art,
7 months ago
Math,
7 months ago
Hindi,
7 months ago
Music,
1 year ago
Social Sciences,
1 year ago