Optical glass meaning in hindi

How to pronounce Optical glass
Other : ऑप्टिकल ग्लास Ex:  Davy set him onto optical glass experiments
ऑष्‍टिकल ग्लास Ex:  Small optical glass that is placed in the eyebrow प्रकाशीय काँच प्रकाशीय कांच
Examples
Usage of Optical glass in sentences


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