You cannot see your reflection in a piece of white paper because. .. A. It does not reflect light. B. For this surface, angle of incidence does not equal angle of reflection. C. The rough surface diffuses the reflected light. D. Not all colors of light are reflected.
rq2-
For an object to be visible it has to reflect light, since we can see paper, it does reflect light but mere reflection is not necessary for seeing reflection, the orientation of light rays should remain same after reflection as when the rays left the object, so option A is not the explanation.
Even on paper the angle of reflection is equal to angle of reflection and this is always true so option B also falls short of explaining the absence of reflection on paper.
As the Surface of paper is rough, the light rays falling parallelly fall on differently oriented surfaces of the paper so that they all are reflected at different angles (but the angle of incidence is still equal to angle of reflection, its only that all the parallel rays are now being reflected by surfaces not aligned with each other), so the rough surface diffuses the reflected light hence keeping us from seeing the reflection. Hence option C is correct.
The characteristic color of object is the one which it reflects, so as white is the combination of all the colors it means that the paper is reflecting all the light incident upon it.
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