Ophthalmic Optics第 7 / 100 题
What is the total power of a lens with a front surface of +6.00 D and a back surface of -2.00 D (thin lens approximation)?
a.+4.00 D
b.+8.00 D
c.-4.00 D
d.+3.00 D
解析
For a thin lens, total power is the algebraic sum of the front and back surface powers. +6.00 + (-2.00) = +4.00 D.
免费刷完整 100 道题库 — 无需注册。
同考点相关题目
- Which lens material has the highest Abbe value, meaning the least chromatic aberration?
- A minus (concave) lens forms what type of image and has what type of focal point?
- The power of a lens surface increases as its radius of curvature does what?
- Vergence describes what property of light?
- The base curve of a lens refers to which surface?
- Add power on a multifocal lens represents what?