Question

From which glass, lenses and prism for optical instrument is made up of?

Answer 1

Crown or Flint glass

Answer 2

The glass so used is:

Explanation:

FLINT GLASS

• Optical glass, commonly known as flint glass, is the softest of all types of glass.
• It is transparent and clear.
• Lenses, prisms, and other optical devices are the most common uses for flint glass.
• Sodium, potassium, and lead silicates are used to make these.

• Because of their compensatory optical qualities, a concave flint glass lens is typically paired with a convex crown glass lens to make an achromatic doublet lens, which decreases chromatic aberration.