Question

Why opaque material is used in making walls give scientific reason

Answer 1

Answer:

When a light wave is neither absorbed nor transmitted by an object, then it is reflected. ... Opaque materials do not allow transmission of light waves. In other words, we can't see through an opaque object. We can only see the surface because the light waves are re-emitted from the surface back to our eyes.

Answer 2

Answer:

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