GK
GENERAL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The type of glass used in making lenses and prisms is
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pyrex glass
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flint glass
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jena glass
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soft glass
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Explanation:
Detailed explanation-1: -In the optical glass industry, flint glass is any highly refractive lead-containing glass used to make lenses and prisms. Because it absorbs most ultraviolet light but comparatively little visible light, it is also used for telescope lenses.
Detailed explanation-2: -Flint glass is combination of silicon dioxide (SiO2) with lead or potassium. It creates a relatively high refractive index and high degree of light dispersing power compared to other types of glass. Flint glasses are arbitrarily defined as having an Abbe number of 50 to 55 or less.
Detailed explanation-3: -flint glass. noun. : heavy glass that contains an oxide of lead and is used in lenses and prisms.
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