Ophthalmic OpticsCâu 18 / 100
Compared with crown glass, polycarbonate is valued mostly for what property?
a.Higher Abbe value
b.High impact resistance
c.Lowest cost
d.Scratch resistance without coating
Giải thích
Polycarbonate is highly impact resistant, making it the preferred material for safety, children's, and sports eyewear. Its drawbacks include a low Abbe value and a soft surface that needs a scratch coating.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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- A prism deviates light in which direction?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với ABO (American Board of Opticianry) Certified Optician Exam · Quy trình kiểm tra