Which one of the following is the best reflector of light ?

wood

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pencil

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wall

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plane mirror

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Solution

The correct option is D plane mirror
Wood, pencil and wall have rough and opaque surfaces which cause the light waves to scatter and hence, are poor reflectors of light.

Plane mirror has a polished and a shiny surface and reflect the light such that all the reflected rays travel in the same direction, thereby, causing specular reflection of light.

Hence, the correct answer is OPTION D.

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