Question

it is very useful to us that all surfaces do not give regular reflection​

Answer 1

Answer:

False. Intensity of regular reflected light is more compare to the intensity of diffused reflected light.

hence the regular reflected light does more harmful to eye tand diffused reflector light.

For example, motorists finding it difficult to drive in wet road during night because wet road make the surface uniformly plane and gives regular reflection of light. Hence motorists are not getting a clear vision.

In photography, regular reflected light gives unwanted glaring in the picture while the diffused light gives uniform brightness to get clear picture.