Physics
The red colour of the sun at sunrise and sunset is due to which of the following phenomenon ?
- deviation
- dispersion
- both deviation and dispersion
- scattering
Spectrum
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Answer
scattering
Reason — During sunrise and sunset, the sun is positioned at a lower angle in the sky. This causes sunlight to travel through a thicker layer of Earth's atmosphere, which scatters shorter wavelengths of light (such as blue and green) more strongly than longer wavelengths (such as red and orange). As a result, the shorter wavelengths are scattered out of the line of sight, leaving predominantly red and orange hues to be observed.
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