Question

write the two matterial that are opaqe in nature​

Answer 1

Explanation:

$<p style="color:cyan;font-family:cursive;background:black;font size:25px;"> Concrete wood and metal are example...$

Answer 2

Answer:

mirror , pencil box , etc.

Explanation:

Opaque objects are the objects from which light doesn't pass/propagate through the object.