Ophthalmic OpticsCâu 23 / 100
Which lens curve produces plus power?
a.A flat surface
b.A concave surface
c.A prism surface
d.A convex surface
Giải thích
A convex surface is thicker in the middle and converges light, producing plus power. A concave surface is thinner in the middle, diverges light, and produces minus power.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- As the index of refraction of a lens material increases, for a given power the lens can be made which way?
- A prism deviates light in which direction?
- One prism diopter of power displaces an image by how much and at what distance?
- Effective power change from vertex distance is most significant for which prescriptions?
- The optical center of a lens is the point where what happens?
- A photochromic lens changes tint in response to what?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra