science
Grade6
Easy
Question
Which of the following is a correct descending order of surfaces on the basis of the amount of light that they reflect. The notations for the surfaces are
A. Rough
B. Unpolished
C. Polished
D. Highly polished
- D > C > B > A
- A > C > B > D
- D > B > C > A
- C > D > B > A
Hint:
The glass reflects more light than wood or clothes.
The correct answer is: D > C > B > A
- Objects with glossy or polished surfaces reflect more light than objects with dull or unpolished surfaces. Silver metal is the best reflector of light.
- For this reason, flat mirrors are made by depositing a thin layer of metal (silver) on one side of a flat sheet of glass.
- Reflections from rough surfaces such as clothing, paper, and paved roads result in a type of reflection called diffuse reflection.
- Whether a surface is microscopically rough or smooth has a large effect on the subsequent reflection of rays.
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