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Which type of glass allows sunlight but blocks heat radiation? — Answer & Solution | Civexa

Building Materials · Glass

Glass MCQ with answer and solution

Which type of glass allows sunlight but blocks heat radiation?

Solution

Concept

Low-E glass

Step-by-step solution

1. Low emissivity glass lets in visible light but reflects heat radiation.

Explanation

A thin metallic coating reflects infrared.

Why the other options are wrong

Other glasses do not selectively block heat.

Shortcut

Low-E = light in, heat out.

Correct answer: B) Low emissivity glass

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