3. In order to reduce light reflection on a lens surface (nr = 1.5) by coating a thin film with thickness (1 = 2/4), which of following coating material should be used? A. Zinc sulfide (n = 2.32). B. Cerium fluoride (n C. Magnesium fluoride (n = 1.35). D. Zirconium dioxide (n = 2.10). 1.63).

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3. In order to reduce light reflection on a lens surface (nr
(1 = 1/4), which of following coating material should be used?
1.5) by coating a thin film with thickness
A. Zinc sulfide (n
B. Cerium fluoride (n = 1.63).
C. Magnesium fluoride (n = 1.35).
D. Zirconium dioxide (n = 2.10).
2.32).
Transcribed Image Text:3. In order to reduce light reflection on a lens surface (nr (1 = 1/4), which of following coating material should be used? 1.5) by coating a thin film with thickness A. Zinc sulfide (n B. Cerium fluoride (n = 1.63). C. Magnesium fluoride (n = 1.35). D. Zirconium dioxide (n = 2.10). 2.32).
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