Question on: JAMB Physics - 2024
Rainbow is formed when sunlight undergoes
A
reflection
B
refraction
C
dispersion
D
diffraction
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Correct Option: C
The formation of a rainbow involves the following steps:
- Refraction: Sunlight enters a raindrop and bends due to the change in medium density.
- Reflection: Light reflects off the back of the raindrop.
- Refraction (again): Light exits the raindrop and bends again.
- Dispersion: White sunlight separates into component colors due to different wavelengths being bent at different angles.
Therefore, dispersion is the primary phenomenon responsible for forming the rainbow.
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