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
Answers
Answer:
(d)
Explanation:
Marble will take place when a beam Of light strikes
a) The wooden table that has been a polished-Regular reflection
The surface that has been recently polished can be a good example of a smooth surface. The wooden table that has been polished has a surface that is smooth.
b) White Chalk powder that is used in school- Diffused reflection
Chalk powder spread on a surface is an example of an irregular surface. Hence, it is rough. Therefore, the diffused reflection will appear from chalk powder.
c) Cardboard surface- Diffused reflection
The surface of the cardboard is a kind of irregular surface. Hence, the diffused reflection will take place from a cardboard surface.
d) Marble floor – Regular reflection
Marble floor can be a good example of a surface that is regular. Since water makes the ceramic glossy, thus, the reflections that are regular occur on this surface.
e) Mirror- Regular reflection
A mirror has a very smooth surface hence it gives a regular reflection.
f) Piece of paper- Diffused reflection
Although a piece of paper may look smooth, it has many irregularities on its surface. Due to this reason, it will give a diffused reflection.