Question

14. Which of following is used in preparation of optical glass of camera
having high refractive index ?
(A) ceric compounds
(B) Ceo
(C) Oxides of lanthanides
(D) Gaddinium sulphate
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Answer 1

Answer:

Mark me has brilliant

Explanation:

Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion). ... In many modern flint glasses, lead oxides are replaced with other metal oxides such as titanium dioxide and zirconium dioxide without significantly altering the optical properties of the glass.

C) Oxides of lanthanides

Answer 2

Answer:

b is the correct answer of this question