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Types of spherical lenses

Lens spectacl...

Question

Lens spectacles are made from

A

Soft Glass

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B

Hard Glass

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C

Pyrex Glass

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D

Flint Glass

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Solution

The correct option is D Flint Glass
Answer: Flint Glass.
Flint glass is any highly refractive 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.

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