In a thin film of soap, which color appears at the center of the pattern due to
Practice Questions
Q1
In a thin film of soap, which color appears at the center of the pattern due to destructive interference? (2023)
Red
Blue
Green
Yellow
Questions & Step-by-Step Solutions
In a thin film of soap, which color appears at the center of the pattern due to destructive interference? (2023)
Step 1: Understand that a thin film of soap can create colorful patterns due to light interference.
Step 2: Know that light waves can interfere with each other in two ways: constructive interference (where they add up) and destructive interference (where they cancel each other out).
Step 3: Recognize that different colors of light have different wavelengths, with red light having a longer wavelength compared to other colors.
Step 4: At the center of the soap film, the conditions are such that red light undergoes destructive interference, meaning it cancels out.
Step 5: Conclude that because red light is canceled out at the center, it is the color that does not appear there.
