Ophthalmic OpticsCâu 16 / 100
The index of refraction of a material is a ratio comparing what?
a.Speed of light in a vacuum to speed of light in the material
b.Front curve to back curve
c.Diameter to thickness
d.Weight to volume
Giải thích
Index of refraction (n) equals the speed of light in a vacuum divided by the speed of light in the material. A higher index means light slows more, allowing thinner lenses for a given power.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Chromatic aberration is caused by what?
- Which of the following describes a plano lens?
- Spherical aberration in a lens is best described as what?
- An aspheric lens design primarily reduces what?
- Compared with crown glass, polycarbonate is valued mostly for what property?
- Snell's law governs which optical phenomenon?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra