Lens

The video tutorial discusses how light converges or diverges from a single point using lenses. It explains that lenses for optical light are typically made from glass or hard plastic and have been utilized for over 3000 years.

Discuss the historical importance of lenses in human civilization.

What advancements in materials have been made for optical lenses over the years?

What is the significance of the point from which lenses converge or diverge?

• It determines the lens type

• It affects the image quality

• It is irrelevant

• It indicates the lens size

What materials are commonly used to make optical lenses?

• Glass

• Plastic

• Wood

• Metal

How long have lenses been in use according to the text?

• 1000 years

• 2000 years

• 3000 years

• 4000 years