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Q.

Is it true that we need a shiny surface for reflection?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
The crystals of a rough surface are irregular, due to which the angle of incidence is not equal to the angle of reflection. Therefore the light intensity coming from the rough surface after reflection is very less. In contrast, the crystals of a shiny surface are regular, due to which the angle of incidence and angle of reflection are equal. The intensity of the light after reflection by a shiny surface is more as compared to the intensity of light coming after reflection from an irregular surface.
 
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