Question

19. The red colour of the sun at sunrise and sunset is because-
(a)Red colour is least scattered as its wavelength is the least
b) Red colour is least scattered as its wavelength is the most.
(c) Red colour is most scattered as its wavelength is the least.
(d) Red colour is most scattered as its wavelength is the most .
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Answer 1

Answer:

Red colour is least scattered as it's wavelength is the most

Answer 2

The scattering of light is something we've looked into. Many hypotheses have been proposed, however the Rayleigh scattering theory is the most suitable. The idea of light scattering, which is dependent on the wavelength of light, is used to answer this question.

Explanation:

• When the sun rises or sets, it is just over the horizon, and the sun's light beams take longer to reach the earth because they must travel further into the atmosphere, where they interact more with the particles along their route.
• We know that light with shorter wavelengths scatters more strongly than light with longer wavelengths. Because blue light has the shortest wavelength, it is scattered more than red light, which only reaches the earth during sunset and sunrise. As a result, the sun appears red at these times.
• As a result, the light that reaches our eyes has a longer wavelength, giving the sun its reddish hue.

Therefore, D is the correct option