2017 · Q31
The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is
General KnowledgePhysics
- Adiffraction
- Binterference
- Cdispersion
- Dreflection
Explanation
A rainbow forms when sunlight refracts into raindrops, disperses into its spectrum (wavelength-dependent refraction), reflects internally, and refracts out. Dispersion — the splitting of white light into colours — is the primary phenomenon responsible. Hence C.