In a thin film of oil on water, which color will appear at the topmost layer if
Practice Questions
Q1
In a thin film of oil on water, which color will appear at the topmost layer if the thickness of the film is such that it causes constructive interference for blue light?
Red
Green
Blue
Yellow
Questions & Step-by-Step Solutions
In a thin film of oil on water, which color will appear at the topmost layer if the thickness of the film is such that it causes constructive interference for blue light?
Step 1: Understand that a thin film of oil on water can create different colors due to interference of light.
Step 2: Know that constructive interference happens when light waves combine to make a brighter color.
Step 3: Identify that if the film thickness is right for blue light, it means blue light waves are reinforcing each other.
Step 4: Conclude that since blue light is being reinforced, it will be the most visible color at the topmost layer of the oil film.
