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
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
(a) Polished wooden table →
Regular reflection
A polished surface is an example of a smooth surface. A polished
wooden table has a smooth surface. Hence, reflections from the
polished table will be regular.
(b) Chalk powder → Diffused
reflection
Chalk power spread on a surface is an example of an irregular
surface. It is not smooth. Therefore, diffused reflection will take
place from chalk powder.
(c) Cardboard surface →
Diffused reflection
Cardboard surface is also an example of an irregular surface. Hence,
diffused reflection will take place from a cardboard surface.
(d) Marble floor with water spread over it →
Regular reflection
Marble floor with water spread over it is an example of a regular
surface. This is because water makes the marble surface smooth.
Hence, regular reflection will take place from this surface.
(e) Mirror → Regular
reflection
Mirror has a smooth surface. Therefore, it will give a regular
reflection.
(f) Piece of paper →
Diffused reflection
Although a piece of paper may look smooth, but it has many
irregularities on its surface. Due to this reason, it will give a
diffused reflection.
(a) Polished wooden table → Regular reflection
A polished surface is an example of a smooth surface. A polished wooden table has a smooth surface. Hence, reflections from the polished table will be regular.
(b) Chalk powder → Diffused reflection
Chalk power spread on a surface is an example of an irregular surface. It is not smooth. Therefore, diffused reflection will take place from chalk powder.
(c) Cardboard surface → Diffused reflection
Cardboard surface is also an example of an irregular surface. Hence, diffused reflection will take place from a cardboard surface.
(d) Marble floor with water spread over it → Regular reflection
Marble floor with water spread over it is an example of a regular surface. This is because water makes the marble surface smooth. Hence, regular reflection will take place from this surface.
(e) Mirror → Regular reflection
Mirror has a smooth surface. Therefore, it will give a regular reflection.
(f) Piece of paper → Diffused reflection
Although a piece of paper may look smooth, but it has many irregularities on its surface. Due to this reason, it will give a diffused reflection.
