question_answer 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) Card board surface                      (d) Marble floor with water spread over it (e) Mirror                                           (f) piece of Paper.  

Answer:

(a) Polished wooden table will take place a regular reflection because its surface is smooth. (b) Chalk powder takes place a diffused reflection because its surface is-uneven. (c) Card board surface has minute irregularities on it, so it will have a irregular reflection. (d) Marble floor with water spread over it takes place a regular reflection as it will act like a plane surface. (e) Mirror has a regular reflection. It surface is also shiny and has smooth surface. (f) Piece of a paper takes irregular of diffused reflection because it has uneven surface.