Certified Paraoptometric Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which type of lens displaces light instead of focusing it?

Prism

A prism is used to displace light, not focus it. Prisms are often used to create effects such as a rainbow or to separate white light into different colors. A Pl-cylinder is short for a cylindrical lens, which is used to focus light in one direction. Effective diameter is a measure that's used to describe the size of a lens, but it doesn't affect how light is focused. A diopter is a unit of measurement used to determine the strength of a lens, but like effective diameter, it doesn't affect the way light is focused. Therefore, A prism is the only option that displaces light instead of focusing it.

Get further explanation with Examzify DeepDiveBeta

Pl-cylinder

Effective diameter

diopter

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy