ICSE Class 9 Answered
Question 4.
Asked by Abc123736 | 08 Dec, 2015, 08:19: PM
Expert Answer
Regular reflection:
- When a beam of light falls on a smooth and polished surface (say a plane mirror, glass, or water), regular reflection occurs.
- The incident rays and reflected rays are parallel beams.
- We find our images in proper proportions in plane mirrors due to regular reflection.
- The reflected ray of light moves only in a fixed direction.
- Images formed by regular reflection are always clear and distinct.
- This property of light is used in search light.
Irregular/Diffused reflection:
- When a beam of light falls on a rough surface (say a wall, plastic sheets, writing paper, wooden boards, cloths, skin, leather pieces, or a road), irregular reflection occurs.
- The walls may appear smooth, but if observed under a microscope, they appear uneven with crater-like projections.
- The diffused rays after reflection scatter in different directions.
- The incident rays are parallel beams, but the light reflected from different surfaces will reflect at different angles obeying the laws of reflection.
- Due to irregular reflection, we are able to see things around us.
Answered by Faiza Lambe | 09 Dec, 2015, 12:40: AM
ICSE 9 - Physics
Asked by pritiswansi1996 | 28 Feb, 2021, 05:22: PM
ANSWERED BY EXPERT