Diffusion of light in the atmosphere takes place due to
- ACarbon dioxide
- BDust particlesCorrect
- CHelium
- DWater vapours
Explanation
The correct answer is B because the diffusion of light in the atmosphere is primarily caused by the scattering of sunlight. When sunlight enters the atmosphere, it strikes various suspended particles. Among the given options, dust particles are large enough to deflect and scatter light rays in different directions. This scattering process is what allows light to spread or diffuse, even into areas that are not in direct shadow. Gases like carbon dioxide and helium are molecules that are too small to cause this specific type of diffusion, and while water vapor contributes, solid dust particles are the most effective agents for the diffusion of light.
Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 2003GS1geography
A hydrogen inflated polythene balloon is released from the surface of the earth. As the balloon rises to an altitude up in the atmosphere, it will
- Prelims 2003GS1geography
Assertion (A): The amount of moisture in the atmosphere is related to latitude. Reason (R): The capacity to hold moisture in the form of water vapour is related to temperature.
- Prelims 2003GS1geography
Assertion (A): Areas lying within five to eight degrees latitude on either side of the equator receive rainfall throughout the year. Reason (R): High temperatures and high humidity cause convectional …
- Prelims 2003GS1geography
Which one among the following has the largest shipyard in India?
- Prelims 2003GS1geography
Nanda Devi peak forms a part of
- Prelims 2003GS1geography
Consider the following statements 1. India is the original home of the cotton plant. 2. India is the first country in the world to develop hybrid cotton variety leading to increased production. Which …