Question

It is useful to us that all surface do not give regular reflection . Give reason

Answer 1

Answer:

Explanation:It is very useful for us that all surfaces do not give regular reflection -

• We can see the different objects in our environment,when the light rays are reflected by those objects and captured by our eyes.

• Now if there is only regular reflection,the the reflected light rays will only travel in a particular direction and we can see the object from that direction only and the visualisation process will be very problematic by our eyes.

Answer 2

Answer:

I In everyday life we need some things/ objects which absorb light and not reflect it, ( coefficient of absorption is far greater than coefficient of reflection) like the solar in solar cooker the inner vessel is black to absorb heat, this it's useful to is that all substances don't give regular reflection.