A smooth surface reflects light evenly, creating clear images like in mirrors. A rough surface scatters light in different directions, so no clear image forms. This is why polished metal reflects better than paper or stone.
Class 8 Science Curiosity Grade 8 Chapter 1 Exploring the Investigative World of Science question answer
Class 8 NCERT Science Curiosity Chapter 1 Exploring the Investigative World of Science solutions
When light hits a smooth surface like a mirror or still water, it reflects evenly, following a consistent angle, which creates clear images. This is known as regular reflection. On a rough surface like paper or cloth, the light reflects in many directions due to the uneven texture. This scattered or diffused reflection prevents the formation of a clear image. This difference helps us understand why mirrors reflect our face clearly while a wall or wooden board does not.
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