In a dark room, a parallel beam of light falls on a plane mirror and another parallel beam of light falls on a white wall. The light reflected by the mirror can be seen only in a certain direction, but the reflected light from the wall can be seen from anywhere. Give reason.

Explanation

The plane mirror has a plane smooth reflecting surface, so regular reflection takes place nd the reflected light goes in a fixed firection.Therefore, thereflected light can be seen only ina certain direction.
On the other hand, the wall is a rough surface so irregular reflection takes place, and reflected light gets diffused in all directions. Therefore, the reflected light from the wall can be seen from anywhere.