Diffusion of light in the atmosphere takes place due to:
✓ Correct answer: b) dust particles
ExplanationThe diffusion of light in the atmosphere occurs mainly due to dust particles and aerosols, which scatter sunlight in all directions.This scattering, known as Mie scattering, happens when particles like dust or water droplets are comparable in size to the wavelength of light, scattering all wavelengths almost equally.UPSC GS Paper-I PYQs 592 It causes the sky to appear uniformly bright and ensures visibility even in shadows.Other aerosols like Water Vapors, Smoke, etc can also contribute to the diffusion effect.However, dust particles are the most prominent cause in this context.259
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