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Question
Assertion :Blue colour of sky appears due to scattering of light. Reason: Blue colour has shortest wavelength among all colours of white light.
Assertion :Blue colour of sky appears due to scattering of light. Reason: Blue colour has shortest wavelength among all colours of white light.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Scattering of sunlight through molecules of atmosphere is the reason for the blue of the sky.
- Our atmosphere contains atoms and molecules of different sizes.
- According to their sizes they are able to scatter different wavelength of light.
- For example, the size of the water molecule is greater than the size of the N2 or O2
- It acts as scattering centre for other frequencies which are lower than the frequency of blue light.
- Blue colour scatters more than other colours.
- That is why sky appears blue.
- Scattering of sunlight through molecules of atmosphere is the reason for the blue of the sky.
- Our atmosphere contains atoms and molecules of different sizes.
- According to their sizes they are able to scatter different wavelength of light.
- For example, the size of the water molecule is greater than the size of the N2 or O2
- It acts as scattering centre for other frequencies which are lower than the frequency of blue light.
- Blue colour scatters more than other colours.
- That is why sky appears blue.
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