Question
What happens when the sunlight travels through the Earth's atmosphere?
NDA
General Ability
General Science
2025
NDA 2025 (Phase 1)
NDA General Ability Question (2025) — Solution
Options
- A. The blue colour is scattered more compared to the red colour
- B. The red colour is scattered more compared to the blue colour
- C. Both the blue and the red colours are scattered equally
- D. The blue colour is not scattered but the red colour is scattered the most
Answer
A. The blue colour is scattered more compared to the red colour
Step-by-step solution
According to Rayleigh scattering, the intensity of scattered light is inversely proportional to the fourth power of its wavelength, given by I 1 ^4 . Since the wavelength of blue light is shorter than the wavelength of red light ( _ blue Therefore, the blue colour is scattered more compared to the red colour. Answer: The blue colour is scattered more compared to the red colour
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