Which variety of glass is used for manufacture of optical glasses ?

Sodium glass

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Flint glass

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Ground glass

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Quartz

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Solution

The correct option is B Flint glass
The most common types of glasses used in optics are crown glasses and flint glasses, designations based on their dispersions. Flint glasses contain lead. These designations are further subdivided by composition and have letter designations and number designations called "glass numbers".

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