In a thin film of oil on water, which color will appear at the topmost layer when viewed from above?
Practice Questions
1 question
Q1
In a thin film of oil on water, which color will appear at the topmost layer when viewed from above?
Red
Blue
Green
Yellow
The color that appears depends on the thickness of the film and the wavelength of light. Typically, red light is least affected by thin film interference.
Questions & Step-by-step Solutions
1 item
Q
Q: In a thin film of oil on water, which color will appear at the topmost layer when viewed from above?
Solution: The color that appears depends on the thickness of the film and the wavelength of light. Typically, red light is least affected by thin film interference.
Steps: 6
Step 1: Understand that a thin film of oil on water can create different colors due to light interference.
Step 2: Know that light is made up of different colors, each with its own wavelength (like red, blue, green).
Step 3: Realize that when light hits the oil film, some light reflects off the top surface and some goes through to the water and reflects back.
Step 4: Understand that the thickness of the oil film affects how these reflected light waves interact with each other.
Step 5: Remember that red light has a longer wavelength and is less affected by the interference compared to other colors.
Step 6: Conclude that when you look at the topmost layer of the oil film, red light is usually the color that appears.
