Question: __________ glass is used for the manufacture of optical glass.
[A].Pyrex
Soda
Flint
Crooke’s
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.