Blue colour of sky is due to-a)Scattering of light b)Reflection of light c)Refraction of light d)Diffraction of light Correct answer is option 'A'. Can you explain this answer?

Question

Answer

Option A is correct because  blue colour  has shorter wavelength and largest deviation and light pass through the atmosphere it scattered  and Blue colour visible.

Answer

When white light coming from sun passes from the atmosphere the scattering of blue light is maximum so that blue colour spread in sky faster

Answer

Scattering of Light
The blue color of the sky is due to the phenomenon called scattering of light. When sunlight passes through the Earth's atmosphere, it encounters tiny particles of various sizes such as molecules, dust, and water droplets. These particles interact with the light, causing it to scatter in different directions.

Rayleigh Scattering
The scattering of light responsible for the blue color of the sky is known as Rayleigh scattering. This type of scattering occurs when the size of the particles in the atmosphere is much smaller than the wavelength of visible light. The shorter wavelengths of light, such as blue and violet, are scattered more than the longer wavelengths like red and orange. As a result, the blue light is scattered in all directions by the atmospheric particles, making the sky appear blue to our eyes.

Explanation of the Process
1. Sunlight consists of a spectrum of colors, including all the colors of the rainbow. When sunlight travels through the Earth's atmosphere, it encounters air molecules such as nitrogen and oxygen.
2. These molecules are much smaller in size compared to the wavelength of light, causing them to scatter the light in all directions.
3. The intensity of scattering is inversely proportional to the fourth power of the wavelength. This means that shorter wavelengths, such as blue and violet, are scattered more than longer wavelengths like red and orange.
4. As a result of Rayleigh scattering, the blue light gets scattered in all directions, filling the entire sky with blue color.
5. Our eyes perceive this scattered blue light, making the sky appear blue to us during the daytime.

Other Factors
While scattering of light is the primary reason for the blue color of the sky, other factors can also influence the appearance of the sky's color. These factors include the presence of pollutants, dust, and other atmospheric conditions. For example, during sunrise and sunset, the sky can appear red or orange due to a phenomenon called Mie scattering, which occurs when larger particles in the atmosphere scatter the longer wavelengths of light.

In conclusion, the blue color of the sky is due to the scattering of light, specifically Rayleigh scattering, which occurs when sunlight interacts with the molecules in the Earth's atmosphere. This phenomenon causes the shorter wavelengths of light, such as blue and violet, to scatter more, resulting in the blue color we see during the day.

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