It reflects in different directions because its rough, there is many sides so the light reflects of the sides causing it to reflect in different directions.
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When light strikes a rough surface it reflects in essentially random directions.
Because it has a shiny & smooth surface which helps to reflect the light... Take an example of tree. A tree have a rough surface due to which light can be reflect. So All of this depends on the smoothness of surface.. :-)
Yes.Yes.Yes.Yes.
If the surface is completely reflective then the angle at which the incident light leaves the surface will be different. For a rough surface the light would be scattered, whereas for a smooth surface they would reflect at the same angle the hit. If the surface isn't completely reflective then the angle and speed and which the light enters the object. For a rough surface the angles will random and based on the refractive index of the material. For a smooth surface they will be proportional to the sin of the angle times the refractive index.
The answer varies from one surface to another. A highly polished mirror will reflect almost all whereas a rough black body will reflect very little.