Question

Why is it important that some materials
are opaque

Answer 1

Explanation:

because they have to be

thanku

Answer 2

Answer:

it is necessary that materials should be opaque

Explanation:

for example, if we were it opaque and we're instead tranparent or translucent, then we will be invisible right!! Same way if everything was tranparent or translucent there won't be anything to reffer as world. Also if everything was opaque, then also same case will come. Imagine your specs lens was an opaque object, then what is the point of using a lens.

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