Q2 of 17 Page 214

Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection?
























Regular reflection



Diffused reflection



1.



When all the parallel light rays reflected from a plane surface are parallel, the reflection is known as regular reflection



When all the parallel rays reflected from a plane surface are not parallel, the reflection is known as diffused or irregular reflection



2.



It takes place from a smooth or regular surface



It takes place from a rough surface



3.



Images are formed by regular reflection.



Images are not formed by irregular reflection.





More from this chapter

All 17 →
1

Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.

 3

Mention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case.

(a) Polished wooden table


(b) Chalk powder


(c) Cardboard surface


(d) Marble floor with water spread over it


(e) Mirror


(f) Piece of paper

 4

State the laws of reflection.

 5

Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.