In a thin film of oil on water, which color will appear at the center of the pat
Practice Questions
Q1
In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes destructive interference for red light? (2022)
Blue
Green
Yellow
Red
Questions & Step-by-Step Solutions
In a thin film of oil on water, which color will appear at the center of the pattern if the film thickness is such that it causes destructive interference for red light? (2022)
Step 1: Understand that a thin film of oil on water can create colorful patterns due to interference of light.
Step 2: Know that interference can be constructive (light adds up) or destructive (light cancels out).
Step 3: Recognize that destructive interference for red light means that red light is canceled out and does not appear.
Step 4: Identify that shorter wavelengths of light, like blue, will be visible when red is canceled out.
Step 5: Conclude that if red light is canceled out, the color that will appear at the center of the pattern is blue.
