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When glass and polished metal both have shine, what is the expert basis for identification?

Answer and explanation

Correct answer: Observing transparency in glass and opaque reflection in metal

The governing concept is material-specific surface appearance. Glass may transmit light and reveal objects or background through it, whereas polished metal reflects light from an opaque surface without allowing vision through the material. Shine alone is therefore insufficient for identification. Option D is correct because it combines reflection with transparency; A, B, and C provide no reliable distinction between the two materials.

Related tags

GlassMetalTransparencyReflectionTextureElements Of ArtArt EducationClass 9 Mcq

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