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
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.
Related Questions
Violet light is scattered nearly …………… times more than the red light.
- 4
- 8
- 16
- 9
To an astronaut in a space-ship, the earth appears —
- white
- red
- blue
- black
The sky in a direction other than that of the sun appears …………… to an observer on the moon.
- red
- blue
- orange
- black
The danger signal is red because its wavelength is the …………… and therefore it gets ………… the least.
- least, deviated
- longest, scattered
- longest, dispersed
- least, scattered