Question

The polymer used for optical lenses is:

• A. polypropylene
• B. polyvinyl chloride
• C. polythene
• D. polymethyl methacrylate

Hint:

PMMA is widely used in optical lenses because of its clarity and ease of molding, making it ideal for optical applications.

Answer 1

The Correct Option is D

Step 1: Polymethyl methacrylate (PMMA) is commonly used in optical lenses due to its transparency and high refractive index. It is also known as acrylic or acrylic glass.
Step 2: PMMA is preferred for optical applications because of its clarity, durability, and ease of molding into precise shapes.
Step 3: Other polymers like polypropylene, polyvinyl chloride, and polythene are not as suitable for optical lenses due to their lower transparency and optical properties.