MCQ
When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of:
- ADisperson of light.
- BReflection of light.
- CPolarization of light.
- ✓Interference of light.
✓
Answer
Correct option: D.
Interference of light.
Interference effect is produced by a thin film (coating of a thin layer of a translucent material on a medium of different refractive index which allows light to pass through it). ln the present case, oil floating on water forms a thin film on the surface of water, leading to the display of beautiful colours in daylight because of the interference of sunlight.
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