Which of the following materials causes regular reflection of incident light?

Heap of sugar crystals

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Polished steel plate

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Plane mirror

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Rubber mat

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Solution

The correct options are
B Polished steel plate
C Plane mirror
Regular reflection takes place from a smooth reflecting surface e.g a plane mirror or a polished steel plate.
Diffused reflection takes place from the surfaces that are rough or irregular and consequently the reflected light rays scatter in arbitrary directions. In a heap of sugar, all the crystals align themselves in random orientations and therefore, the outer surface is very irregular. Rubber mats are made rough for a better grip, so the light falling on them incur diffused reflection.

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Similar questions

(a) What is the difference between regular reflection and diffuse reflection of light? Name one object which can produce regular reflection of light and diffuse reflection of light.

(b) Draw diagrams to show regular reflection of light and another diffuse reflection of light.

(a) Polished wooden table (b) Chalk powder

(d) Paper (e) Marable floor with water spread over it.

Q. Which of the following materials causes regular reflection of incident light?

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